NASM CPT Study Guide Deck Flashcards
Nervous System
The body’s communication network
What is this?
Nervous System
Define Central Nervous System
brain and spinal cord; coordinates activity of the body.
What is this?
Central Nervous System
Define Peripheral Nervous System
nerves connecting the CNS to the rest of the body and environment.
What is the nervous system made up of?
Central Nervous System
Peripheral Nervous System
What does this image represent?
The peripheral nervous system
What is the Peripheral Nervous System subdivided into?
Autonomic Nervous System
Somatic Nervous System
What are the functions of the nervous system?
Sensory (changes in the environment)
Integrative (analyze and interpret)
Motor (neuromuscular response)
Define Somatic Nervous System
Part of the peripheral nervous system
Serves outer areas of the body and skeletal muscle
Voluntary control
What is the Autonomic Nervous System?
Involuntary systems (heart, digestion, etc.)
Part of the peripheral nervous system
Divided into Parasympathetic & Sympathetic
What does this image represent?
The autonomic nervous system
What does the Parasympathetic Nervous System do?
Decreases activation during rest and recovery
“rest and digest”
What does the Sympathetic Nervous System do?
Increases activation to prepare for an activity.
“fight or flight”
What is a neuron?
functional unit of the nervous system
What do motor (efferent) neurons do?
Transmit nerve impulses from CNS to effector sites.
What do sensory (afferent) neurons do?
Respond to stimuli; transmit nerve impulses from effector sites to CNS
What do mechanoreceptors do?
sense distortion in body tissues
What do joint receptors do?
respond to pressure, acceleration, and deceleration of joints.
What are golgi tendon organs?
Sense changes in muscle tension.
What are muscle spindles?
Sense changes in muscle length (stretch)
What is a tendon?
connect muscle to bone; provide anchor for muscles to produce force.
What is fascia?
outer layer of connective tissue surrounding a muscle
What are fascicles?
bundle of individual muscle fibers
Describe a muscle fiber
cellular components and myofibrils encased in a plasma membrane
Describe a sarcomere
produces muscular contraction; repeating sections of actin and myosin.
Describe the sliding filament theory.
thick and thin filaments slide past one another, shortening the entire sarcomere.
Describe Type I (slow twitch) muscle tissue
smaller size
fatigue slowly
Describe Type II (fast twitch) muscle tissue
larger size
quick to produce maximal tension
fatigue quickly
What is a motor unit?
one motor neuron and the muscle fibers it connects with
(one motor unit innervates many muscle fibers)
What is neural activation?
contraction of a muscle generated by neural stimulation
What muscles does the local stabilization system consist of, and where do they attach?
attach directly to vertebrae
Consists of: transverse abdominis, internal oblique, multifidus, pelvic floor, diaphragm.
TAIO MPD
What muscles does the global stabilization system consist of, and where do they attach?
attach from pelvis to spine
Consists of: quadratus lumborum, psoas major, external oblique, rectus abdominis, gluteus medius, adductor complex, portions of internal oblique.
QL Ps EO RA GM AC IO
QLP EORAGMACIO
What muscles does the movement system consist of, and where do they attach?
attach spine and/or pelvis to extremities
Consists of: latissimus dorsi, hip flexors, hamstring complex, quadriceps
What does the axial skeleton consist of?
skull, rib cage, and vertebral column
What does the appendicular skeleton consist of?
upper and lower extremities, shoulder and pelvic girdles.
What are the functions of the skeletal system?
supports body
protects organs
allows bodily movement
produces blood
stores minerals
What are skeletal depressions?
aka “fossa”
flattened or indented portions of a bone; can be muscle attachment sites.
What is a bone process?
projection protruding from a bone
muscles, tendons, and ligaments can attach.
What are ligaments?
connects bone to bone
little blood supply
slow to heal.
Define Non-synovial joints
no joint cavity, connective tissue, or cartilage
little to no movement (e.g., sutures of the skull)
Define synovial joints.
held together by joint capsule and ligaments
associated with movement
What are the major types of motion of joints?
roll
slide
spin
Name the hinge joints, and in what plane of motion they work?
elbows, ankles
sagittal plane movement
Name the ball and socket joints and their planes of motion.
shoulders, hips
most mobile, all three planes of motion
What is the endocrine system?
system of glands
secretes hormones to regulate bodily function
What does estrogen influence?
influences fat deposition on hips, buttocks, and thighs
What is growth hormone?
anabolic hormone
responsible for bodily growth up until puberty
What does insulin do?
regulates energy and glucose metabolism in the body
What does the cardiovascular system consist of?
heart, blood, and blood vessels
Describe the cardiac muscle.
shorter, more tightly connected than skeletal muscle; involuntary
What are the atria?
smaller, superior chambers of the heart; receive blood from veins.
What does the right atrium do?
gathers deoxygenated blood returning to the heart
What does the left atrium do?
gathers oxygenated blood from the lungs
What is the Sinoatrial (SA) node and what does it do?
located in right atrium
initiates impulse for heart rate
“pacemaker for the heart”
What are ventricles and what do they do?
larger, inferior (lower) chambers of the heart
pump blood out.
What does the right ventricle do?
pumps deoxygenated blood to lungs
What does the left ventricle do?
pumps oxygenated blood to the body
What do arteries do?
Carry blood away from the heart
What do veins do?
Carry blood back to the heart.
What are arterioles?
small branches of arteries; end in capillaries.
What are capillaries?
smallest blood vessels
site of gas, chemical, and water exchange
What are venules?
very small veins
connect capillaries to veins
What is stroke volume?
amount of blood pumped with each contraction.
What is heart rate?
the rate at which the heart pumps
average untrained adult = 70-80 bpm.
Define cardiac output
volume of blood pumped per minute
heart rate × stroke volume
What does the respiratory system do?
brings in oxygen, removes CO2
What are the primary inspiratory muscles?
—diaphragm, external intercostals.
What are the secondary inspiratory muscles?
scalenes, pectoralis minor, sternocleidomastoid
Describe expiration.
relaxing inspiratory muscles (passive), contracting expiratory muscles (active) to move air out.
What are the expiratory muscles?
internal intercostals, abdominals
What is the Resting oxygen consumption (VO2) formula?
3.5 ml × kg-1 × min-1 = 1 metabolic equivalent (MET)
What is Maximal oxygen consumption (VO2max)?
highest rate of oxygen transport & use at max exertion.
What are bioenergetics?
study of energy in the human body.
What is the anaerobic threshold?
where the body can no longer produce enough energy with normal oxygen intake.
What is Excess post oxygen consumption (EPOC)?
elevation of metabolism after exercise.
Describe the body’s energy systems.
Describe biomechanics.
science concerned with internal and external forces acting on the body
Describe force
influence applied by one object to another
accelerates or decelerates the second object
Describe torque
a force that produces rotation
The closer the load to the point of rotation, the less torque it creates (i.e., bent arm is easier than straight arm)
What is a lever, and what are the three classes?
rigid “bar” that rotates around a stationary fulcrum
1st class—fulcrum in middle (nodding head)
2nd class—resistance in the middle (calf raise)
3rd class—effort in the middle (biceps curl); most common in human limbs.
What is a 1st class lever?
fulcrum in middle (nodding head)
What is a 2nd class lever?
resistance in the middle (calf raise)
What is a 3rd class lever?
effort in the middle (biceps curl); most common in human limbs
Describe the superior anatomic location.
above a POR
Describe the inferior anatomic location.
below a POR
Describe the proximal anatomic location.
nearest to a POR
Describe the distal anatomic location.
farthest from a POR
Describe the contralateral anatomic location.
on the opposite side of the body
Describe the ispilateral anatomic location.
same side of the body
name the 3 planes of motion
frontal
sagittal
transverse
What are the motions in the frontal plane?
Adduction/abduction
Lateral flexion
Eversion/inversion
Give examples of frontal plane exercises
side lunge, lateral raise,
What are the motions in the sagittal plane?
flexion & extension
Give examples of sagittal plane movements.
bicep curl, back squat, deadlift
What are the motions of the transverse plane?
Rotation
Horizontal adduction/abduction
Give examples of transverse plane motion
Throwing, golfing, swinging a bat, trunk rotation
(rotational exercises)
What is flexion?
bending movement
decreases relative angle between segments
What is extension?
straightening movement
increases relative angle between segments.
What are plantarflexion & dorsiflexion?
plantarflexion = extension at the ankle
dorsiflexion = flexion at the ankle
What is horizontal abduction?
transverse plane arm movement from anterior to lateral (e.g. chest flies)
(move away from midline)
Describe horizontal adduction.
transverse plane arm movement from lateral to anterior.
describe internal rotation
rotation toward the middle of the body
describe external rotation
rotation away from midline of body
What is the length-tension relationship?
resting length of a muscle and the tension it can produce at that length
*Visualize a fighter trying to throw a punch into a heavy bag, but they are too close or too far away to land it with optimal force.
Describe force couple
muscles working together to produce movement
Describe the force-velocity curve
as the velocity of a contraction increases, concentric force decreases and eccentric force increases.
What is Neuromuscular efficiency?
ability to produce and reduce force, and stabilize the kinetic chain in all three planes of motion
What is Structural efficiency?
alignment of musculoskeletal system that allows center of gravity to be maintained over a base of support
What is Davis’s law?
soft tissue models along the lines of stress
Describe autogenic inhibition
neural impulses that sense tension are greater than impulses that cause muscles contraction
muscle spindles inhibition
Describe reciprocal inhibition
contracting one muscle & relaxing its antagonist to allow movement
Describe Relative flexibility
tendency of the body to seek the path of least resistance.
Describe pattern overload
consistently repeating the same motion
places abnormal stresses on the body
Postural distortion patterns
predictable patterns of muscle imbalances
Describe altered reciprocal inhibition
inhibition caused by a tight agonist, which in turn decreases neural drive to its functional antagonist.
(aka, altered length-tension)
e.g., hip flexor overactive leads to decreased strength/neural drive to glute max. this leads to synergistic dominance of hamstrings (they take over)
Describe Synergistic dominance
inappropriate (synergistic) muscle takes over the function of a weak/inhibited prime mover
(aka, altered force-couple)
e.g., Inhibition of gluteus maximus may lead to synergistic dominance of the biceps femoris (hamstring) during hip extension.
Describe muscle imbalance
alteration of muscle length surrounding a joint
Describe the cumulative injury cycle
Tissue trauma –> inflammation –> muscle spasm –> adhesions –> alterered neuromuscular control –> muscle imbalance –> cycle continues
Describe stabilization
ability to maintain postural equilibrium and support joints during movement
Describe strength
ability of the neuromuscular system to produce internal tension to overcome an external force.
Describe strength endurance
ability to repeatedly produce high levels of force for prolonged periods
Describe maximal strength
max force production in a single effort
Describe muscular hypertrophy
enlargement of skeletal muscle fibers from resistance training.
Describe Power
ability to produce the greatest force in the shortest time
(max force in shortest amount of time)
What are the 5 phases of the OPT Model?
- Stabilization
- Strength endurance
- Maximal Strength
- Muscular Hypertrophy
- Power
What is motor control?
how the CNS integrates sensory information with previous experiences
What is motor learning?
integration of motor control process through practice
leads to relatively permanent change to produce skilled movement
What is motor development?
the change in motor skill development over a lifespan
Describe sensorimotor integration
nerves & muscles work together to gather & interpret information to produce movement
What are muscle synergies?
groups of muscles recruited by the CNS to produce movement
What is proprioception?
cumulative sensory input from all the mechanoreceptors that sense position and limb movement
What is internal feedback?
the body uses sensory information to monitor movement and react to the environment
What is external feedback?
information from an external source to supplement internal environment (e.g., mirror, PT, etc.)
What is soluble fiber?
Dissolves in water
helps moderate blood glucose; lowers cholesterol
What is insoluble fiber?
doesn’t dissolve in water
What is glucose?
simple sugar
made endogenously (in the body) from carb, fat, protein
main fuel source
What is glycogen?
complex carb used to store energy in the liver & muscles
What’s the difference between glucose and glycogen?
glucose = energy source made in body
glycogen = storage form of glucose
What is the glycemic index?
rate at which certain carb sources raise blood sugar & effect on insulin release
What is considered high GI range?
>70
What is considered low GI range?
<55