Question 1

At rest, myosin molecules are

Accepted Answer

A)  bound to other myosin molecules. 
B)  bound to troponin molecules. 
C)  blocked from binding tropomyosin molecules. 
D)  bound to ATP molecules. 
E)  blocked from binding to calcium ions. 
A)  bound to other myosin molecules. 
B)  bound to troponin molecules. 
C)  blocked from binding tropomyosin molecules. 
D)  bound to ATP molecules. 
E)  blocked from binding to calcium ions.

Question 2

Neurotransmitters that cause skeletal muscle contraction are normally stored in

Accepted Answer

A)  myofibrils. 
B)  motor neuron endings. 
C)  motor units. 
D)  motor end plates. 
E)  actin. 
A)  myofibrils. 
B)  motor neuron endings. 
C)  motor units. 
D)  motor end plates. 
E)  actin.

Question 3

The skeletal muscle organelles that actually contracts is (are) the

Accepted Answer

A)  sarcolemma. 
B)  sarcomere. 
C)  transverse tubules. 
D)  myotubules. 
E)  myofibrils. 
A)  sarcolemma. 
B)  sarcomere. 
C)  transverse tubules. 
D)  myotubules. 
E)  myofibrils.

Question 4

Activities that require anaerobic endurance

Accepted Answer

A)  require maximal contraction of muscles for short periods of time. 
B)  do not use ATP very quickly. 
C)  usually do not cause an individual to develop an oxygen debt. 
D)  do not rely on the energy reserves of creatine phosphate. 
E)  all of the above 
A)  require maximal contraction of muscles for short periods of time. 
B)  do not use ATP very quickly. 
C)  usually do not cause an individual to develop an oxygen debt. 
D)  do not rely on the energy reserves of creatine phosphate. 
E)  all of the above

Question 5

Which of the following is a lateral spinal flexor when used unilaterally?

Accepted Answer

A)  iliocostalis group 
B)  spinalis group 
C)  longissimus group 
D)  quadratus lumborum 
E)  both A and B 
A)  iliocostalis group 
B)  spinalis group 
C)  longissimus group 
D)  quadratus lumborum 
E)  both A and B

Question 6

The rotator cuff refers to muscles surrounding the

Accepted Answer

A)  pelvic girdle. 
B)  pectoral girdle. 
A)  pelvic girdle. 
B)  pectoral girdle.

Question 7

Which of the following would have the lowest density of motor units?

Accepted Answer

A)  large muscles of the upper arms 
B)  postural muscles of the back 
C)  muscles that control the eye 
D)  leg muscles 
E)  the calf muscle 
A)  large muscles of the upper arms 
B)  postural muscles of the back 
C)  muscles that control the eye 
D)  leg muscles 
E)  the calf muscle

Question 8

Muscles that insert into the deltoid tuberosity are most likely to

Accepted Answer

A)  flex the shoulder. 
B)  extend shoulder. 
C)  abduct the shoulder. 
D)  adduct the shoulder. 
E)  none of the above 
A)  flex the shoulder. 
B)  extend shoulder. 
C)  abduct the shoulder. 
D)  adduct the shoulder. 
E)  none of the above

Question 9

Which of the following muscles would contract most quickly against the same load?

Accepted Answer

A)  a muscle receiving 10 action potentials per second 
B)  a muscle receiving 20 action potentials per second 
C)  neither, muscles always contract at the same rate 
A)  a muscle receiving 10 action potentials per second 
B)  a muscle receiving 20 action potentials per second 
C)  neither, muscles always contract at the same rate

Question 10

Which of the following originates from the sternum?

Accepted Answer

A)  pectoralis major 
B)  teres major 
C)  teres minor 
D)  subscapularis 
E)  supraspinatus 
A)  pectoralis major 
B)  teres major 
C)  teres minor 
D)  subscapularis 
E)  supraspinatus

Question 11

The brief moment following stimulation when a muscle is unresponsive to another stimulus is called the ________ period.

Accepted Answer

A)  latent 
B)  contraction 
C)  relaxation 
D)  refractory 
E)  both C and D 
A)  latent 
B)  contraction 
C)  relaxation 
D)  refractory 
E)  both C and D

Question 12

Which of the following is the origin of the pronator teres?

Accepted Answer

A)  olecranon process of the ulna 
B)  infraglenoid tuberosity of the scapula 
C)  lateral epicondyle of the humerus 
D)  medial epicondyle of the humerus 
E)  base of the second metacarpal 
A)  olecranon process of the ulna 
B)  infraglenoid tuberosity of the scapula 
C)  lateral epicondyle of the humerus 
D)  medial epicondyle of the humerus 
E)  base of the second metacarpal

Question 13

The muscle that dorsiflexes the foot is the

Accepted Answer

A)  tibialis anterior. 
B)  tibialis posterior. 
C)  soleus. 
D)  peroneus. 
E)  gastrocnemius. 
A)  tibialis anterior. 
B)  tibialis posterior. 
C)  soleus. 
D)  peroneus. 
E)  gastrocnemius.

Question 14

Which of the following is a synergist for elbow flexion?

Accepted Answer

A)  brachioradialis 
B)  triceps brachii 
C)  pronator quadratus 
D)  biceps brachii 
E)  latissimus dorsi 
A)  brachioradialis 
B)  triceps brachii 
C)  pronator quadratus 
D)  biceps brachii 
E)  latissimus dorsi

Question 15

The area of the sarcomere that contains only thick filaments and no zone of overlap is the

Accepted Answer

A)  Z line. 
B)  M line. 
C)  H band. 
D)  A band. 
E)  I band. 
A)  Z line. 
B)  M line. 
C)  H band. 
D)  A band. 
E)  I band.

Question 16

Connective tissue that surrounds an entire muscle is called

Accepted Answer

A)  endomysium. 
B)  perimysium. 
C)  sarcolemma. 
D)  sarcomere. 
E)  epimysium. 
A)  endomysium. 
B)  perimysium. 
C)  sarcolemma. 
D)  sarcomere. 
E)  epimysium.

Question 17

The striated appearance of skeletal muscle results from

Accepted Answer

A)  transverse tubule pattern. 
B)  the sarcoplasmic reticulum. 
C)  cisternae placement. 
D)  sarcomere arrangement. 
E)  all of the above 
A)  transverse tubule pattern. 
B)  the sarcoplasmic reticulum. 
C)  cisternae placement. 
D)  sarcomere arrangement. 
E)  all of the above

Question 18

Which of the following is (are) a function of skeletal muscle?

Accepted Answer

A)  produce movement 
B)  maintain posture 
C)  maintain body temperature 
D)  A and B only 
E)  all of the above 
A)  produce movement 
B)  maintain posture 
C)  maintain body temperature 
D)  A and B only 
E)  all of the above

Question 19

Match the muscle in the first column with its action in the second column.
_____ 1. rectus femoris A. dorsiflexion
_____ 2. adductor magnus B. extends leg
_____ 3. biceps femoris C. plantar flexion
_____ 4. gastrocnemius D. adducts thigh
_____ 5. tibialis anterior E. flexes leg

Accepted Answer

1-B, 2-D,

Question 20

The enzyme acetylcholinesterase causes acetylcholine to

Accepted Answer

A)  decompose. 
B)  synthesize. 
C)  bond to actin. 
D)  be secreted. 
E)  form cross-bridges. 
A)  decompose. 
B)  synthesize. 
C)  bond to actin. 
D)  be secreted. 
E)  form cross-bridges.

At rest, myosin molecules are

Neurotransmitters that cause skeletal muscle contraction are normally stored in

The skeletal muscle organelles that actually contracts is (are) the

Activities that require anaerobic endurance

Which of the following is a lateral spinal flexor when used unilaterally?

The rotator cuff refers to muscles surrounding the

Which of the following would have the lowest density of motor units?

Muscles that insert into the deltoid tuberosity are most likely to

Which of the following muscles would contract most quickly against the same load?

Which of the following originates from the sternum?

The brief moment following stimulation when a muscle is unresponsive to another stimulus is called the ________ period.

Which of the following is the origin of the pronator teres?

The muscle that dorsiflexes the foot is the

Which of the following is a synergist for elbow flexion?

The area of the sarcomere that contains only thick filaments and no zone of overlap is the

Connective tissue that surrounds an entire muscle is called

The striated appearance of skeletal muscle results from

Which of the following is (are) a function of skeletal muscle?

Match the muscle in the first column with its action in the second column. ___ 1. rectus femoris A. dorsiflexion _ 2. adductor magnus B. extends leg _ 3. biceps femoris C. plantar flexion _ 4. gastrocnemius D. adducts thigh ___ 5. tibialis anterior E. flexes leg

The enzyme acetylcholinesterase causes acetylcholine to

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphoid System and Immunity

The Respiratory System

The Digestive System

Nutrition and Metabolism

The Urinary System

The Reproductive System

Development and Inheritance

Filters

Exam 7: The Muscular System

At rest, myosin molecules are

Neurotransmitters that cause skeletal muscle contraction are normally stored in

The skeletal muscle organelles that actually contracts is (are) the

Activities that require anaerobic endurance

Which of the following is a lateral spinal flexor when used unilaterally?

The rotator cuff refers to muscles surrounding the

Which of the following would have the lowest density of motor units?

Muscles that insert into the deltoid tuberosity are most likely to

Which of the following muscles would contract most quickly against the same load?

Which of the following originates from the sternum?

The brief moment following stimulation when a muscle is unresponsive to another stimulus is called the ________ period.

Which of the following is the origin of the pronator teres?

The muscle that dorsiflexes the foot is the

Which of the following is a synergist for elbow flexion?

The area of the sarcomere that contains only thick filaments and no zone of overlap is the

Connective tissue that surrounds an entire muscle is called

The striated appearance of skeletal muscle results from

Which of the following is (are) a function of skeletal muscle?

Match the muscle in the first column with its action in the second column. _____ 1. rectus femoris A. dorsiflexion _____ 2. adductor magnus B. extends leg _____ 3. biceps femoris C. plantar flexion _____ 4. gastrocnemius D. adducts thigh _____ 5. tibialis anterior E. flexes leg

The enzyme acetylcholinesterase causes acetylcholine to

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphoid System and Immunity

The Respiratory System

The Digestive System

Nutrition and Metabolism

The Urinary System

The Reproductive System

Development and Inheritance

Filters

Match the muscle in the first column with its action in the second column. ___ 1. rectus femoris A. dorsiflexion _ 2. adductor magnus B. extends leg _ 3. biceps femoris C. plantar flexion _ 4. gastrocnemius D. adducts thigh ___ 5. tibialis anterior E. flexes leg