Glossary Flashcards
A-Band
The region of the sarcomere where myosin filaments are predominantly seen with minor overlap of the actin filaments.
Abduction
A movement in the frontal plane away from the midline of the body.
Acceleration
When a muscle exerts more force than is being placed on it, the muscle will shorten; also known as a concentric contraction or force production.
Acidosis
The accumulation of excessive hydrogen that causes increased acidity of the blood and muscle.
Actin
One of the two major myofilaments, actin is the “thin” filament that acts along
with myosin to produce muscular contraction.
Action Potential
Nerve impulse that allows neurons to transmit information.
Active Flexibility
The ability of agonists and synergists to move a limb through the full range of motion while their functional antagonist is being stretched.
Active-Isolated Stretch
The process of using agonists and synergists to dynamically move the joint into a range of motion.
Adduction
Movement in the frontal plane back toward the midline of the body.
Adenosine Diphosphate (ADP)
A high-energy compound occurring in all cells
from which adenosine triphosphate (ATP) is formed.
Adenosine Triphosphate (ATP)
Energy storage and transfer unit within the cells of
the body.
Adequate Intake (AI)
A recommended average daily nutrient intake level, based on observed (or experimentally determined) approximations or estimates of nutrient intake that are assumed to be adequate for a group (or groups) of healthy people; this measure is used when an RDA cannot be determined.
Afferent Neurons
(Also known as sensory neurons) They gather incoming sensory information from the environment and deliver it to the central nervous system.
Agonist
Muscles that are the primary movers in a joint motion; also known as prime movers.
Alarm Reaction
The first stage of the General Adaptation Syndrome (GAS), the initial reaction to a stressor.
Altered Reciprocal Inhibition
The concept of muscle inhibition, caused by a tight agonist, which inhibits its functional antagonist.
Amortization Phase
The electromechanical delay a muscle experiences in the transition from eccentric (reducing force and storing energy) to concentric (producing force) muscle action.
Anaerobic Threshold
The point during high-intensity activity when the body can no longer meet its demand for oxygen and anaerobic metabolism predominates; also called lactate threshold.
Anatomic Position
The position with the body erect with the arms at the sides and the palms forward. The anatomic position is of importance in anatomy because it is the position of reference for anatomic nomenclature. Anatomic terms such as anterior and posterior, medial and lateral, and abduction and adduction apply to the body when it is in the anatomic position.
Antagonist
Muscles that act in direct opposition to agonists (prime movers).
Anterior
(or Ventral) On the front of the body.
Aortic Semilunar Valve
Controls blood flow from the left ventricle to the aorta going to the entire body.
Appendicular Skeleton
Portion of the skeletal system that includes the upper and lower extremities.
Arteries
Vessels that transport blood away from the heart.
Arterioles
Small terminal branches of an artery, which end in capillaries.
Arteriosclerosis
A general term that refers to hardening (and loss of elasticity) of arteries.
Arthritis
Chronic inflammation of the joints.
Arthrokinetic Dysfunction
- A biomechanical and neuromuscular dysfunction in
which forces at the joint are altered, resulting in abnormal joint movement and pro-prioception. - Altered forces at the joint that result in abnormal muscular activity and impaired neuromuscular communication at the joint.
Arthrokinetic Inhibition
The neuromuscular phenomenon that occurs when a joint dysfunction inhibits the muscles that surround the joint.
Articular (Hyaline) Cartilage
Cartilage that covers the articular surfaces of bones.
Articulation
Junctions of bones, muscles, and connective tissue at which movement occurs; also known as a joint.
Association Stage
Fitt’s second stage in which learners become more consistent with their movement with practice.
Atherosclerosis
- Clogging, narrowing, and hardening of the body’s large arteries and medium-sized blood vessels. Atherosclerosis can lead to stroke, heart attack, eye problems, and kidney problems. 2. Buildup of fatty plaques in arteries that leads to narrowing and reduced blood flow.
Atrioventricular (AV) Node
A small mass of specialized cardiac muscle fibers, located in the wall of the right atrium of the heart, that receives heartbeat impulses from the sinoatrial node and directs them to the walls of the ventricles.
Atrioventricular Valves
Allow for proper blood flow from the atria to the ventricles.
Atrium
The superior chamber of the heart that receives blood from the veins and forces it into the ventricles.
Augmented Feedback
Information provided by some external source such as a fit-ness professional, videotape, or a heart rate monitor.
Autogenic Inhibition
The process by which neural impulses that sense tension are greater than the impulses that cause muscles to contract, providing an inhibitory effect to the muscle spindles.
Autonomous Stage
Fitt’s third stage of motor learning in which the learner has refined the skill to a level of automation.
Axial Skeleton
Portion of the skeletal system that consists of the skull, rib cage, and vertebral column.
Axon
A cylindric projection from the cell body that transmits nervous impulses to other neurons or effector sites.
Backside Mechanics
Proper alignment of the rear leg and pelvis during sprinting, which includes ankle plantar flexion, knee extension, hip extension, and neutral pelvis.
Balance
- The ability to sustain or return the body’s center of mass or line of gravity over its base of support.
- When the body is in equilibrium and stationary, meaning no linear orangular movement.
Ball-and-Socket Joint
Most-mobile joints that allow motion in all three planes. Examples would include the shoulder and hip.
Basal Ganglia
A portion of the lower brain that is instrumental in the initiation and control of repetitive voluntary movements such as walking and running.
Beta-oxidation (a-oxidation)
The breakdown of triglycerides into smaller subunits
called free fatty acids (FFAs) to convert FFAs into acyl-CoA molecules, which then are available to enter the Krebs cycle and ultimately lead to the production of additional ATP.
Bicuspid (Mitral) Valve
Two cusps control the blood flow from the left atrium to the left ventricle.
Bioenergetic Continuum
Three main pathways used by the kinetic chain to produce ATP.
Biomechanics
- A study that uses principles of physics to quantitatively study how forces interact within a living body. 2. The science concerned with the internal and external forces acting on the human body and the effects produced by these forces.
Bipenniform Muscle Fibers
Muscle fibers that are arranged with short, oblique
fibers that extend from both sides of a long tendon. An example would be the rectus femoris.
Blood Lipids
Also known as cholesterol and triglycerides, blood lipids are carried in the blood stream by protein molecules known as high-density lipoproteins (HDL) and low-density lipoproteins(LDL).
Blood Vessels
Network of hollow tubes that circulates blood throughout the body.
Bracing
Occurs when you have contracted both the abdominal, lower back, and buttock muscles at the same time.
Brainstem
The link between the sensory and motor nerves coming from the brain to the body and vice versa.
calorie
Calorie
calorie - The amount of heat energy required to raise the temperature of 1 g of water 1°C.
Calorie - A unit of expression of energy equal to 1000 cal. The amount of heat energy required to raise the temperature of kilogram or lit of water 1°C.
Capillaries
The smallest blood vessels, and the site of exchange of chemicals and water between the blood and the tissues.
Carbohydrates
- Organic compounds of carbon, hydrogen, and oxygen, which include starches, cellulose, and sugars, and are an important source of energy. All carbohydrates are eventually broken down in the body to glucose, a simple sugar. 2. Neutral compounds of carbon, hydrogen, and oxygen (such as sugars, starches, and celluloses), which make up a large portion of animal foods.
Cardiac Output (Q)
Heart rate x stroke volume, the overall performance of the heart.
Cardiorespiratory Fitness
The ability of the circulatory and respiratory systems to
supply oxygen rich blood to skeletal muscles during sustained physical activity.
Cardiorespiratory System
A system of the body composed of the cardiovascular
and respiratory systems.
Cardiorespiratory Training
Any physical activity that involves and places stress on
the cardiorespiratory system.
Cardiovascular Control Center (CVC)
Directs impulses that will either increase or decrease cardiac output and peripheral resistance based on feedback from all structures involved.
Cell Body
The portion of the neuron that contains the nucleus, lysosomes, mitochondria, and a Golgi complex.
Central Controller
Controls heart rate, left ventricular contractility, and arterial blood pressure by manipulating the sympathetic and parasympathetic nervous systems.
Cerebellum
A portion of the lower brain that compares sensory information from the body and the external environment with motor information from the cerebral
cortex to ensure smooth coordinated movement.
Cerebral Cortex
A portion of the central nervous system that consists of the frontal lobe, parietal lobe, occipital lobe, and temporal lobe.
Cervical Spine
The area of the spine containing the seven vertebrae that compose the neck.
Chemoreceptors
Sensory receptors that respond to chemical interaction (smell and taste).
Chronic Obstructive Lung Disease
The condition of altered airflow through the lungs, generally caused by airway obstruction as a result of mucus production.
Collagen
A protein that is found in connective tissue that provides tensile strength. Collagen, unlike elastin, is not very elastic.
Compound-Sets
Involve the performance of two exercises for antagonistic muscles.
For example, a set of bench presses followed by cable rows (chest/back).
Concentric Muscle Action
When a muscle is exerting force greater than the resistive force, resulting in shortening of the muscle.
Conduction Passageway
Consists of all the structures that air travels through before entering the respiratory passageway.
Condyles
Projections protruding from the bone to which muscles, tendons, and ligaments can attach; also known as a process, epicondyle, tubercle, and trochanter.
Condyloid Joint
A joint where the condyle of one bone fits into the elliptical cavity of another bone to form the joint. An example would include the knee joint.
Contralateral
Positioned on the opposite side of the body.
Core
- The center of the body and the beginning point for movement. 2. The structures that make up the lumbo-pelvic-hip complex (LPHC), including the lumbar spine, the pelvic girdle, abdomen, and the hip joint.
Core Strength
The ability of the lumbo-pelvic-hip complex musculature to control an individual’s constantly changing center of gravity.
Coronal Plane
An imaginary plane that bisects the body to create front and back halves; also known as the frontal plane.
Corrective Flexibility
Designed to improve muscle imbalances and altered arthrokinematics.
Creatine Phosphate
A high-energy phosphate molecule that is stored in cells and can be used to resynthesize ATP immediately.
Cumulative Injury Cycle
A cycle whereby an injury will induce inflammation, muscle spasm, adhesions, altered neuromuscular control, and muscle imbalances.
Davis’s Law
States that soft tissue models along the line of stress.
Decelerate
When the muscle is exerting less force than is being placed on it, the muscle lengthens; also known as an eccentric muscle action or force reduction.
Dendrites
A portion of the neuron that is responsible for gathering information from other structures.
Deconditioned
A state of lost physical fitness, which may include muscle imbalances, decreased flexibility, and a lack of core and joint stability.
Depressions
Flattened or indented portions of bone, which can be muscle attachment sites.
Diabetes Mellitus
Chronic metabolic disorder caused by insulin deficiency, which impairs carbohydrate usage and enhances usage of fats and proteins.
Diaphysis
The shaft portion of a long bone.
Diffusion
The process of getting oxygen from the environment to the tissues of the body.
Distal
Positioned farthest from the center of the body, or point of reference.
Dorsal
Refers to a position on the back or toward the back of the body.
Dorsiflexion
When applied to the ankle, the ability to bend at the ankle, moving the front of the foot upward.
Drawing-In Maneuver
- Activation of the transverse abdominis, multifidus, pelvic floor muscles, and diaphragm to provide core stabilization. 2. A maneuver used to recruit the local core stabilizers by drawing the navel in toward the spine.
Dynamic Functional Flexibility
Multiplanar soft tissue extensibility with optimal neuromuscular efficiency throughout the full range of motion.
Dynamic Joint Stabilization
The ability of the stabilizing muscles of a joint to produce optimum stabilization during functional, multiplanar movements.
Dynamic Pattern Perspective (DPP)
The theory that suggests that movement patterns are produced as a result of the combined interactions among many systems (nervous, muscular, skeletal, mechanical, environmental, past experiences, and so
forth).
Dynamic Range of Motion
The combination of flexibility and the nervous system’s
ability to control this range of motion efficiently.
Dynamic Stabilization
When a muscle is exerting force equal to the force being placed on it. Also known as an isometric contraction
Dynamic Stretching
- Uses the force production of a muscle and the body’s momentum to take a joint through the full available range of motion. 2. The active extension of a muscle, using force production and momentum, to move the joint through the full available range of motion.
Eccentric Muscle Action
An eccentric muscle action occurs when a muscle develops tension while lengthening
Effectors
Any structure innervated by the nervous system including organs, glands, muscle tissue, connective tissue, blood vessels, bone marrow, and so forth.
Efferent Neurons
Neurons that transmit nerve impulses from the brain or spinal cord to the effector sites such as muscles or glands; also known as motor
neurons.
Elastin
A protein that is found in connective tissue that has elastic properties.
Endocrine System
The system of glands in the human body that is responsible for producing hormones
Endomysium
The deepest layer of connective tissue that surrounds individual muscle fibers.
Energy-Utilizing
When energy is gathered from an energy-yielding source by some storage unit (ATP) and then transferred to a site that can use this energy
Epicondyle
Projections protruding from the bone to which muscles, tendons, and ligaments can attach; also known as a condyle, process, tubercle, and trochanter.
Epimysium
A layer of connective tissue that is underneath the fascia and surrounds the muscle.
Epiphyseal Plates
The region of long bone connecting the diaphysis to the epiphysis. It is a layer of subdividing cartilaginous cells in which growth in length of the
diaphysis occurs.
Epiphysis
The end of long bones, which is mainly composed of cancellous bone, and house much of the red marrow involved in red blood cell production. They are also
one of the primary sites for bone growth.
Erythrocytes
Red blood cells
Estimated Average Requirement (EAR)
The average daily nutrient intake level that is estimated to meet the requirement of half the healthy individuals who are in a particular life stage and gender group.
Eversion
A movement in which the inferior calcaneus moves laterally.
Excess Postexercise Oxygen Consumption (EPOC)
The state in which the body’s metabolism is elevated after exercise.
Excitation-Contraction Coupling
The process of neural stimulation creating a muscle contraction.
Exercise Metabolism
The examination of bioenergetics as it relates to the unique physiologic changes and demands placed on the body during exercise.
Exhaustion
The third stage of the General Adaptation Syndrome (GAS), when prolonged stress or stress that is intolerable produces exhaustion or distress to the
system.
Expiration
The process of actively or passively relaxing the inspiratory muscles to move air out of the body
Explosive Strength
The ability to develop a sharp rise in force production once a movement pattern has been initiated.
Extensibility
Capability to be elongated or stretched.
Extension
A straightening movement in which the relative angle between two adjacent segments increases.
External Feedback
Information provided by some external source, such as a health and fitness professional, videotape, mirror, or heart rate monitor, to supplement the internal environment.
External Rotation
Rotation of a joint away from the middle of the body.
Fan-Shaped Muscle
A muscular fiber arrangement that has muscle fibers span out from a narrow attachment at one end to a broad attachment at the other end. An
example would be the pectoralis major.
Fascia
The outermost layer of connective tissue that surrounds the muscle
Fascicle
A grouping of muscle fibers that house myofibrils.
Fast Twitch Fibers
Muscle fibers that can also be characterized by the term type IIA and IIB. These fibers contain fewer capillaries, mitochondria, and myoglobin. These fibers fatigue faster than type I fibers.
Fat
One of the three main classes of foods and a source of energy in the body. Fats help the body use some vitamins and keep the skin healthy. They also serve as energy stores for the body. In food, there are two types of fats, saturated and unsaturated.
Feedback
- The utilization of sensory information and sensorimotor integration to aid the kinetic chain in the development of permanent neural representations of
motor patterns. 2. The use of sensory information and sensorimotor integration to help the human movement system in motor learning.
Flat Bones
A classification of bone that is involved in protection and provides attachment sites for muscles. Examples include the sternum and scapulae.
Flexion
A bending movement in which the relative angle between two adjacent segments decreases.
Force
An influence applied by one object to another, which results in an acceleration or deceleration of the second object.
Force-Couple
Muscle groups moving together to produce movement around a joint
Force-Velocity Curve
The ability of muscles to produce force with increasing velocity.
Formed Elements
Refers to the cellular component of blood that includes erythrocytes, leukocytes, and thrombocytes.
Fossa
A depression or indented portion of bone, which could be a muscle attachment site; also known as a depression
Frontal Lobe
A portion of the cerebral cortex that contains structures necessary for the planning and control of voluntary movement.
Frontal Plane
An imaginary bisector that divides the body into front and back halves.
Frontside Mechanics
Proper alignment of the lead leg and pelvis during sprinting, which includes ankle dorsiflexion, knee flexion, hip flexion, and neutral pelvis.
Functional Efficiency
The ability of the nervous and muscular systems to move in the most efficient manner while placing the least amount of stress on the kinetic chain.
Functional Flexibility
Integrated, multiplanar, soft tissue extensibility with optimum neuromuscular control through the full range of motion.
Functional Strength
The ability of the neuromuscular system to perform dynamic eccentric, isometric, and concentric contractions efficiently in a multiplanar
environment.
Fusiform
A muscular fiber arrangement that has a full muscle belly that tapers off at both ends. An example would include the biceps brachii.
General Adaptation Syndrome (GAS)
- A syndrome in which the kinetic chain responds and adapts to imposed demands. 2. A term used to describe how the body responds and adapts to stress.
Generalized Motor Program (GMP)
A motor program for a distinct category of movements or actions, such as overhand throwing, kicking, or running.
General Warm-Up
- Consists of movements that do not necessarily have any movement specificity to the actual activity to be performed. 2. Low-intensity exercise consisting of movements that do not necessarily relate to the more intense exercise
that is to follow.
Gliding Joint
A nonaxial joint that moves back and forth or side to side. Examples would include the carpals of the hand and the facet joints.
Gluconeogenesis
The formation of glucose from noncarbohydrate sources, such as amino acids.
Glucose
A simple sugar manufactured by the body from carbohydrates, fat, and to a lesser extent protein, which serves as the body’s main source of fuel.
Glycemic Index
A ranking of carbohydrate-containing foods based on the food’s effect on blood sugar compared with a standard reference food’s effect.
Glycogen
The complex carbohydrate molecule used to store carbohydrates in the liver and muscle cells. When carbohydrate energy is needed, glycogen is converted into glucose for use by the muscle cells
Golgi Tendon Organs
Receptors sensitive to change in tension of the muscle and the rate of that change.
Goniometric Assessment
Technique measuring angular measurement and joint range of motion.
Ground Reaction Force (GRF)
The equal and opposite force that is exerted back onto the body with every step that is taken.
Hemoglobin
Oxygen-carrying component of red blood cells and also gives blood its red color.
Hinge Joint
A uniaxial joint that allows movement in one plane of motion. Examples would include the elbow and ankle.
Homeostasis
The ability or tendency of an organism or a cell to maintain internal equilibrium by adjusting its physiologic processes.
Horizontal Abduction
Movement of the arm or thigh in the transverse plane from an anterior position to a lateral position.
Horizontal Adduction
Movement of the arm or thigh in the transverse plane from a lateral position to an anterior position.
Horizontal Loading
Performing all sets of an exercise or body part before moving on to the next exercise or body part.
Human Movement Science
The study of functional anatomy, functional biomechanics, motion learning, and motor control.