Basic And Applied Sciences Flashcards
Describe sensory function as it pertains to the nervous system.
The ability of the nervous system to sense changes in either the internal or external environment.
Describe the integrative function as it pertains to the nervous system.
The ability of the nervous system to analyze and interpret sensory information to allow for proper decision-making, which produces the appropriate response.
Describe motor function as it pertains to the nervous system.
The neuromuscular response to sensory information.
Define motor (efferent) neuron relationship
Brain and/or spinal cord –> Muscles or organs
Define sensory (afferent) neuron relationship
Muscles or organs –> Brain and/or spinal cord
Define interneuron relationship
Neuron –> Neuron
Responsibilities of the Nervous System include: (2 of 3)
- Muscle recruitment
- Learned patterns of movements
- Functioning of organs in the body
What is proprioception?
Ability to sense body position and limb movement.
Training proprioceptive abilities improves:
- Balance
- Coordination
- Posture
- Ability to adapt
Define the role of the neuron and name its 3 main parts.
Provide the nervous system with the ability to communicate internally and externally. 3 main components are the cell body, axon, and dendrites.
Central nervous system consists mainly of two components and serves to interpret information. What are those components?
Brain and spinal cord
The peripheral nervous system consists of:
12 cranial nerves
31 pairs of spinal nerves
sensory receptors
Describe functions of peripheral nervous system.
- Connection for nervous system to activate different effector sites.
- Relay information from effector sites back to the brain via sensory receptors
Sensory receptors are broken into four categories/functions. Define them.
- Mechanoreceptors respond to mechanical forces.
- Nociceptors respond to pain.
- Chemoreceptors respond chemical interaction (smell/taste).
- Photoreceptors respond to light (vision).
Describe mechanoreceptors
Specialized structures responsible for sensing distortion in tissues. Some examples of mechanoreceptors include muscle spindles, Golgi tendon organs, and joint receptors.
Describe muscle spindles
- Muscle tissues’ major sensory organs that run parallel to muscle fibers.
- Sensitive to change in length and rate of length change.
- When excited, the muscle spindle will cause the muscle to contract to prevent the muscle from stretching too far or too fast.
Describe the Golgi Tendon Organ (GTO)
- Located where the muscle/tendon meet.
- Sensitive to changes in tension and rate of tension change.
- When excited, the GTO will cause the muscle to relax in order to prevent the muscle from being placed under excessive stress.
Name the three components of the axial skeleton and approximate how many bones are included.
The axial skeleton consists of the skull, the rib cage, and vertebral column. It contains approx. 80 bones.
Name the 4 components of the appendicular skeleton and approximate how many bones it contains.
Consists of the upper extremity, lower extremity, shoulder, and pelvic girdle. The appendicular skeleton contains approx. 126 bones.
What 3 factors determine which of the 5 major bone types a given bone fits in to?
- Shape
- Size
- Proportion to Bone Tissue
What are the 5 categories of bones?
- Long bones
- Short bones
- Flat bones
- Irregular bones
- Sesamoid bones
Joint motion is referred to as __________________ and can be broken down into 3 types of motion: ______, ______, and ______.
arthrokinematics.
Roll, slide, spin.
Provide example of each of the following bone types:
- Flat
- Long
- Short
- Sesamoid
- Irregular
Flat: Scapula in the shoulder Long: Femur Short: Carpals of the hand Sesamoid: Patella of the knee Irregular: Vertebrae of the spine
State the difference between synovial and non-synovial joints
Non-synovial joints (i.e. those in the cranial plates) are typically static and filled with strong, fibrous, skeletal tissue, while synovial joints are more common, typically dynamic, and lubricated by collagen.
What are the 6 types of synovial joints?
- Pivot
- Saddle
- Gliding
- Condyloid
- Hinge
- Ball-in-socket
Name the 3 types of muscle.
- Skeletal
- Cardiac
- Smooth
Describe the structure of skeletal muscle.
Outer Layer (The actual muscle itself)
-Fascia: Outside connective tissue wrap
-Epimysium: Protective coating between fascia and middle layer
Middle Layer
-Fascicle (Fasciculus): Inner bundles of muscle fibers
-Perimysium: Wrap around each fascicle
Inner Layer
-Muscle fibers: many individual fibers
-Endomysium: Connective tissue surrounding each muscle fiber
Describe the construction of an individual muscle fiber.
Outer-most layer: Sarcolemma (a plasma membrane)
- Filled with sarcoplasm, which contains:
- -Glycogen
- -Fats
- -Minerals
- -Oxygen-binding myoglobin
- -Nuclei
- -Mitochondria
- -Myofibrils
Describe the structure of myofibrils.
Myofibrils are made up of sections called sarcomeres
- Sarcomeres stretch between two Z lines
- -Between each Z line are interlaced filaments
- –Thick filaments are called Myosin filaments
- –Thin filaments are called Actin filaments
Describe the importance of Tropomyosin.
Keeps myosin from attaching to actin when muscle is relaxed.
Describe the importance of troponin.
Provides binding sites for calcium and tropomyosin when muscle needs to contract.
What is the neurotransmitter used by the nueromuscular system?
Acetylcholine
Describe Type 1 Muscle
- Often called slow-twitch muscle
- Increased oxygen delivery
- Smaller in size
- Produce less force
- Slow to fatigue
- Long-term contraction (stabilization)
Describe Type 2 Muscle
- Often called fast-twitch muscle
- Decreased oxygen delivery
- Larger in size
- Produce more force
- Quick to fatigue
- Short-term contractions (power)
True or False: All muscles are combinations of slow and fast twitch muscle fibers.
True
Name the 4 possible sub-categories of muscle function in regard to movement.
- Agonist
- Synergist
- Stabilizer
- Antagonist
Define agonist.
Muscles that act as prime movers.
Define synergist.
Assist prime movers during movement.
Define stabilizers.
Supports the body while the prime movers and synergists perform the movement patterns.
Define antagonist.
Performs the opposite action of the prime movers.
Name the endocrine glands.
- Pituitary
- Thyroid
- Adrenal
- Testes
- Ovary
- Pancreas
- Thymus
- Pineal Gland
The pituitary produces what?
Growth hormone
The pancreas produces what?
Insulin
****
Adrenal glands produce what?
Epinephrine
The hypothalamus produces what?
Somatostatin
Name the hormone responsible for maintaining an energy supply under times of stress.
Cortisol
Name the hormones responsible for stimulating the “fight or flight” response.
Epinephrine and norepinephrine
Name the gland responsible for regulating satiety.
Hypothalamus
Name the gland responsible for maintaining a steady glucose level in the blood.
Pancreas
Name the hormone that plays a fundemental role in growth and repair of tissue.
Testosterone
_______ is primarily an anabolic hormone that is responsible for most of the growth and development during childhood.
Growth Hormone
Acts as the pacemaker for the heart.
Sinoatrial node
Transports blood bak to the heart.
Veins
Gathers deoxygenated blood.
Right atrium
Define stroke volume.
Amount of blood pumped out of the heart with a contration
Name the largest blood vessel in the body.
Aorta
Heart component that receives oxygenated blood
Left ventricle
Which feature differentiates cardiac muscle from skeletal muscle?
Intercalated discs
________________ is composed of skeletal strutures and tissues that work together to allow proper respiratory mechanics to occur and help pump blood back to the heart during inspiration.
The respiratory pump
Designate the primary respiratory muscle.
Diaphragm
Define expiration
Active or passive relaxation of specific muscles to get air out of the body.
The action by which oxygen gets to the tissues of the body from the outside air
Diffusion
Define respiratory pump
Bones and muscles that work together that allow proper breathing to occur.
The active contraction of specific breathing muscles to move air into the body.
Inspiration
The lungs and respiratory passageways are known as ___________________.
The respiratory or pulmonary system.
During heavy or forced breathing, inspiratory ventilation relies on the activity of which secondary respiratory muscles?
Scalenes and Pectoralis Minor
Of the following, which option(s) are part of the respiratory airways?
- Trachea
- Bronchioles
- Alveoli
- Larynx
Alveoli
Provides oxygen to the body while removing waste products.
Cardiorespiratory system
The best measure of cardiorespiratory fitness.
VO2max
____________________ can lead to inadequate oxygen and retention of metabolic waste that creates fatigued muscles.
Abnormal breathing patterns
One example of a submaximal exercise test used to predict maximal oxygen consumption.
Step test
1 MET=
Resting oxygen consumption
Fick Equation=
(cardio output)(arterial-venous difference)
The material or substance on which an enzyme acts.
Substrates
Organic compounds of carbon, hydrogen, and oxygen, which include startches, cellulose, and sugars, and are an important source of energy.
Carbohydrates
Define fat.
1 of the 3 main classes of foods and a source of energy in the body. In food, there are two types: saturated and unsaturated.
Define tryglycerides.
The chemical or substrate form in which most fat exists in food as well as in the body.
Amino acids linked by peptide bonds, which consist of carbon, hydrogen, nitrogen, oxygen, and usually sulfur, and that have several essential biologic compounds.
Proteins
Define gluconeogenesis.
The formation of glucose from non carbohydrate sources, such as amino acids.
Which substrate rarely supplies much energy during exercise and in many descriptions is ignored as a signifigant fuel for energy metabolism?
Proteins
The primary end product after the digestion of carbohydrates is the formation of _____________.
Glucose
What do ATP and ADP stand for?
Adenosine Triphosphate and Adenosine Diphosphate