Exam 8: Muscle Physiology

Indicate which bands are being described in each statement by writing the appropriate letter in the blank using the answer code below: a.A band b.I band c.H zone d.I band and H zone -Composed of thick filaments only

Match muscle type with the correct characteristics. a.voluntary, neurogenic, and striated b.voluntary, neurogenic, and nonstriated c.involuntary, myogenic, and striated d.involuntary, neurogenic and nonstriated e.involuntary, myogenic, and nonstriated -Skeletal muscle

Muscle fibers develop tension by

With twitch summation, the muscle fiber is stimulated so rapidly that it does not have an opportunity to return to resting potential between stimuli.

The lever system at the elbow joint provides a mechanical advantage so that when the biceps muscle contracts to flex the elbow joint and lift an object in the hand, the force developed in the biceps can be considerably less than the actual load that is moved.

Muscles that have a fine degree of control have small motor units.

Indicate which of the characteristics in question apply to each of the muscle fiber types by using the following answer code: a.Slow-oxidative fiber b.Fast-oxidative fiber c.Fast-glycolytic fiber d.Slow-oxidative fiber and fast-oxidative fiber e.Fast-oxidative fiber and fast-glycolytic fiber f.Slow-oxidative fiber, fast-oxidative fiber and fast-glycolytic fiber -Has a relatively high oxygen requirement

The most common need for additional oxygen after rigorous exercise is for the repayment of the ____________________, when activity was being supported by creatine phosphate and glycolysis.

If a muscle cell is excited adequately, ____________________ is released from the sarcoplasmic reticulum.

Cardiac muscle tissue

Spastic paralysis occurs when

Based on the length-tension relationship,

The strength and rate of contraction of the heart can be influenced by the autonomic nervous system.

Indicate the characteristics of the muscle-tension receptors using the following answer code: a.muscle spindle b.Golgi tendon organ c.both of these receptors -Detects change in muscle tension

Indicate which type of muscle is associated with the property in question by writing the appropriate letter in the blank using the answer code below: a.skeletal muscle only b.single-unit smooth muscle only c.cardiac muscle only d.skeletal muscle and cardiac muscle e.skeletal muscle and single-unit smooth muscle f.single-unit smooth muscle and cardiac muscle g.skeletal, single-unit smooth, and cardiac muscles -Displays pacemaker potentials and slow-wave potentials

All cross bridges within a sarcomere stroke in unison when pulling the actin filaments.

Indicate which of the characteristics in question apply to each of the muscle fiber types by using the following answer code: a.Slow-oxidative fiber b.Fast-oxidative fiber c.Fast-glycolytic fiber d.Slow-oxidative fiber and fast-oxidative fiber e.Fast-oxidative fiber and fast-glycolytic fiber f.Slow-oxidative fiber, fast-oxidative fiber and fast-glycolytic fiber -Has numerous mitochondria

Indicate which of the characteristics in question apply to each of the muscle fiber types by using the following answer code: a.Slow-oxidative fiber b.Fast-oxidative fiber c.Fast-glycolytic fiber d.Slow-oxidative fiber and fast-oxidative fiber e.Fast-oxidative fiber and fast-glycolytic fiber f.Slow-oxidative fiber, fast-oxidative fiber and fast-glycolytic fiber -Do not readily fatigue

Indicate which of the characteristics in question apply to each of the muscle fiber types by using the following answer code: a.Slow-oxidative fiber b.Fast-oxidative fiber c.Fast-glycolytic fiber d.Slow-oxidative fiber and fast-oxidative fiber e.Fast-oxidative fiber and fast-glycolytic fiber f.Slow-oxidative fiber, fast-oxidative fiber and fast-glycolytic fiber -Has abundant glycolytic enzymes

Match muscle type with the correct characteristics. a.voluntary, neurogenic, and striated b.voluntary, neurogenic, and nonstriated c.involuntary, myogenic, and striated d.involuntary, neurogenic and nonstriated e.involuntary, myogenic, and nonstriated -Cardiac muscle