kinesiology and physiology

Question 1

frontal plane (coronal)

Answer 1

• divides body ant and post
• abduction and adduction - occur around ant-post axis

Question 2

sagittal plane

Answer 2

• divides body R and L sections
• flexion and extension around med-lat axis

Question 3

transverse plane

Answer 3

• divides body into upper and lower sections
• med and lat rotation - around vertical axis

Question 4

type I muscle fibers

Answer 4

• aerobic, red, tonic, slow twitch, slow oxidative
• low fatiguability, high capillary density, high myoglobin content, smaller fibers, extensive blood supply, large amounts mitochondria
• marathon, swimming

Question 5

type II muscle fibers

Answer 5

• anaerobic, red (IIA) and white (IIB), phasic, fast twitch, fast-glycolytic
• high fatigability, low capillary density, low myglobin content, large fibers, less blood supply, fewer mitochondria
• high jump, sprinting

Question 6

muscle spindle

Answer 6

• distributed through belly of muscle
• send info to NS about length and rate of change of lenth
• control for posture and involuntary movements

Question 7

golgi tendon organ

Answer 7

• encapsulated sensory receptors tht muscle tendons pass through and then attach to muscle fibers
• sensitive to tension, especially when produced from active muscle contraction
• transmit info about tension and rate of change
• average of 10-15 muscle fibers connected in series with each GTO