Domain 1: Basic & Applied Sciences & Nutritional Concepts Flashcards
Division of Peripheral system that serves outer areas of the body and skeletal muscle; voluntary.
Somatic
Division of peripheral nervous system that serves involuntary systems (heart, digestion, etc).
Autonomic
Decreases activation of involuntary systems during rest and recovery.
Parasympathetic
Increases activation of involuntary systems to prep for activity.
Sympathetic
Transmits nerve impulses from CNS to effector sites.
Motor (efferent) neurons
Responds to stimuli; transmits nerve impulses from effector sites to CNS.
Sensory (afferent) neurons
Sense distortion in body tissues.
Mechanoreceptors
Responds to pressure, acceleration and deceleration of joints.
Joint receptors
Senses changes in muscular tension.
Golgi tendon organs (GTO)
Senses changes in muscle length.
Muscle spindles
Smaller size; fatigue slowly.
Type 1 (slow twitch) muscle tissue
Larger size; quick to produce maximal tension; fatigue quickly.
Type 2 (fast twitch) muscle tissue
Chemical messengers that transport impulses from nerve to muscle.
Neurotransmitters
Attach directly to vertebrae.
Consists of: transverse abdominis, internal oblique, multifisus, pelvic floor, diaphragm.
Local stabilization system
Attach from pelvis to spine.
Consists of: quadratics lumborum, psoas major, external oblique, recurs abdominis, gluteus medius, adductor complex, portions of internal oblique.
Global stabilization system
Attach spine and/or pelvis to extremities.
Consists of: latissimus dorsi, hip flexors, hamstring complex, quadriceps.
Movement system
Joint motion.
Arthrokinematics
No joint cavity, connective tissue, or cartilage; little to no movement.
Non-synovial joints
Held together by joint capsule and ligaments; associated with movement.
Synovial joints
System of glands; secretes hormones to regulate bodily function.
Endocrine system
Anabolic hormone; responsible for bodily growth up until puberty.
Growth hormone
Regulates energy and glucose metabolism in the body.
Insulin
Shorter, more tightly connected than skeletal muscle; involuntary.
Cardiac muscle
Smaller, superior chambers of the heart; receive blood from veins.
Atria
Gathers deoxygenated blood returning to the heart.
Right atrium
Gathers oxygenated blood from the lungs.
Left atrium
Located in the right atrium; initiates impulse for heart rate; “pacemaker for the heart”.
Sinoatrial (SA) node
Larger, inferior chambers of the heart; pump blood out.
Ventricles
Pumps deoxygenated blood to the lungs.
Right ventricle
Pumps oxygenated blood to the body.
Left ventricle
Carries blood away from the heart.
Arteries
Transports blood back to the heart.
Veins
Small branches of arteries; end in capillaries.
Arterioles
Smallest blood vessels; site of gas, chemical and water exchange.
Capillaries
Very small veins; connect capillaries to larger veins.
Venules
The amount of blood pumped with each contraction.
Stroke volume
The rate at which the heart pumps; average untrained adult = 70-80 bpm.
Heart rate
Volume of blood pumped per minute; heart rate x stroke volume.
Cardiac output