Question 1

All of the following are muscles that move the eyeball EXCEPT

Accepted Answer

A) superior rectus 
B) lateral rectus 
C) inferior oblique 
D) internal oblique 
E) superior oblique 
A) superior rectus 
B) lateral rectus 
C) inferior oblique 
D) internal oblique 
E) superior oblique

Question 2

During skeletal muscle contraction, the power stroke causes the thin filaments to slide over the thick filaments.

Accepted Answer

A) True 
 B)False

Question 3

Which of the labeled muscles in the diagram is the sternocleidomastoid?

Accepted Answer

A) A 
B) D 
C) N 
D) O 
E) P 
A) A 
B) D 
C) N 
D) O 
E) P

Question 4

The difference in the strength of the muscle contraction needed to pick up a pencil versus lift a 30-pound weight is dependent on

Accepted Answer

A) the number of antagonists involved. 
B) the size of the motor units involved. 
C) the use of glycogen as a primary energy source. 
D) the number of motor units involved. 
E) both the size and the number of the motor units involved. 
A) the number of antagonists involved. 
B) the size of the motor units involved. 
C) the use of glycogen as a primary energy source. 
D) the number of motor units involved. 
E) both the size and the number of the motor units involved.

Question 5

Denervation atrophy involves loss of muscle tone due to lack of muscle activity.

Accepted Answer

A) True 
 B)False

Question 6

A muscle that produces an upward (superior)movement is a

Accepted Answer

A) pronator 
B) tensor 
C) flexor 
D) depressor 
E) levator 
A) pronator 
B) tensor 
C) flexor 
D) depressor 
E) levator

Question 7

Which of the following is true of smooth muscle?

Accepted Answer

A) under involuntary control 
B) contracts faster than skeletal muscle 
C) fatigues faster than skeletal muscle 
D) each smooth muscle fiber must be innervated 
E) all of the choices are correct 
A) under involuntary control 
B) contracts faster than skeletal muscle 
C) fatigues faster than skeletal muscle 
D) each smooth muscle fiber must be innervated 
E) all of the choices are correct

Question 8

After a period of maximal muscle activity, the amount of oxygen needed to support the conversion of lactic acid to glycogen is a component of

Accepted Answer

A) muscle fatigue 
B) oxygen debt 
C) rigor 
D) tetanus 
E) summation 
A) muscle fatigue 
B) oxygen debt 
C) rigor 
D) tetanus 
E) summation

Question 9

Which of the following flexes and abducts the wrist?

Accepted Answer

A) flexor digitorum profundus 
B) flexor digitorum superficialis 
C) flexor carpi radialis 
D) flexor carpi ulnaris 
E) palmaris longus 
A) flexor digitorum profundus 
B) flexor digitorum superficialis 
C) flexor carpi radialis 
D) flexor carpi ulnaris 
E) palmaris longus

Question 10

Which of the following substances is released from the sarcoplasmic reticulum into the sarcoplasm to initiate skeletal muscle contraction?

Accepted Answer

A) potassium 
B) calcium 
C) ATP 
D) phosphate 
E) sodium 
A) potassium 
B) calcium 
C) ATP 
D) phosphate 
E) sodium

Question 11

During anaerobic cellular respiration in skeletal muscles, pyruvic acid produced by _____ is converted into _____.

Accepted Answer

A) glycolysis; glycogen 
B) glycolysis; lactic acid 
C) Kreb's cycle; acetyl CoA 
D) cellular respiration; carbon dioxide 
E) glycolysis; myoglobin 
A) glycolysis; glycogen 
B) glycolysis; lactic acid 
C) Kreb's cycle; acetyl CoA 
D) cellular respiration; carbon dioxide 
E) glycolysis; myoglobin

Question 12

Aging leads to a relative increase in the number of slow oxidative fibers in skeletal muscles.

Accepted Answer

A) True 
 B)False

Question 13

Orthopedics is the branch of medical science that is concerned with the prevention and correction of disorders of the musculoskeletal system.

Accepted Answer

A) True 
 B)False

Question 14

The muscle attachment to the bone that moves the most during a contraction is called the origin.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is a muscle that moves the mandible?

Accepted Answer

A) orbicularis oculi 
B) masseter 
C) orbicularis oris 
D) epicranius 
E) frontalis 
A) orbicularis oculi 
B) masseter 
C) orbicularis oris 
D) epicranius 
E) frontalis

Question 16

A flaccid muscle would indicate damage to the nerve serving that muscle.

Accepted Answer

A) True 
 B)False

Question 17

An increase in the diameter of muscle fibers is called

Accepted Answer

A) atrophy 
B) hypertrophy 
C) hypertonia 
D) hypotonia 
E) myotonia 
A) atrophy 
B) hypertrophy 
C) hypertonia 
D) hypotonia 
E) myotonia

Question 18

All of the following are muscles that move the humerus EXCEPT

Accepted Answer

A) latissimus dorsi 
B) infraspinatus 
C) teres major 
D) deltoid 
E) pronator teres 
A) latissimus dorsi 
B) infraspinatus 
C) teres major 
D) deltoid 
E) pronator teres

Question 19

An individual with muscle dysmorphia is training for two hours each day lifting heavy weights in a series of short duration exercises. Which of following statements best describes the major changes that are occurring in the muscles of this individual?

Accepted Answer

A) Hypertrophy of slow oxidative (SO)muscle fibers. 
B) Hypertrophy of fast oxidative (FOG)muscle fibers. 
C) Hypertrophy of fast glycolytic (FG)muscle fibers. 
D) New muscle fibers of all three types will be generated. 
E) None of the statements is correct. 
A) Hypertrophy of slow oxidative (SO)muscle fibers. 
B) Hypertrophy of fast oxidative (FOG)muscle fibers. 
C) Hypertrophy of fast glycolytic (FG)muscle fibers. 
D) New muscle fibers of all three types will be generated. 
E) None of the statements is correct.

Exam 8: The Muscular System

All of the following are muscles that move the eyeball EXCEPT

During skeletal muscle contraction, the power stroke causes the thin filaments to slide over the thick filaments.

Which of the labeled muscles in the diagram is the sternocleidomastoid?

The difference in the strength of the muscle contraction needed to pick up a pencil versus lift a 30-pound weight is dependent on

Denervation atrophy involves loss of muscle tone due to lack of muscle activity.

A muscle that produces an upward (superior)movement is a

Which of the following is true of smooth muscle?

After a period of maximal muscle activity, the amount of oxygen needed to support the conversion of lactic acid to glycogen is a component of

Which of the following flexes and abducts the wrist?

Which of the following substances is released from the sarcoplasmic reticulum into the sarcoplasm to initiate skeletal muscle contraction?

During anaerobic cellular respiration in skeletal muscles, pyruvic acid produced by _____ is converted into _____.

Aging leads to a relative increase in the number of slow oxidative fibers in skeletal muscles.

Orthopedics is the branch of medical science that is concerned with the prevention and correction of disorders of the musculoskeletal system.

The muscle attachment to the bone that moves the most during a contraction is called the origin.

Which of the following is a muscle that moves the mandible?

A flaccid muscle would indicate damage to the nerve serving that muscle.

An increase in the diameter of muscle fibers is called

All of the following are muscles that move the humerus EXCEPT

An individual with muscle dysmorphia is training for two hours each day lifting heavy weights in a series of short duration exercises. Which of following statements best describes the major changes that are occurring in the muscles of this individual?

Organization of the Human Body

Introductory Chemistry

Cells

Tissues

The Integumentary System

The Skeletal System

Joints

Nervous Tissue

Central Nervous System, Spinal Nerves, and Cranial Nerves

Autonomic Nervous System

Somatic Senses and Special Sense

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Nutrition and Metabolism

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive Systems

Development and Inheritance

Filters

During anaerobic cellular respiration in skeletal muscles, pyruvic acid produced by _ is converted into _.