Question 1

A muscle fiber is made up of many

Accepted Answer

A) muscle cells. 
B) T tubules. 
C) myofibrils. 
D) fascicles. 
E) bursa. 
A) muscle cells. 
B) T tubules. 
C) myofibrils. 
D) fascicles. 
E) bursa.

Question 2

Which of the following is not an energy source for muscle contraction?

Accepted Answer

A) glycogen 
B) triglycerides 
C) glucose 
D) fatty acids 
E) starch 
A) glycogen 
B) triglycerides 
C) glucose 
D) fatty acids 
E) starch

Question 3

What information does the word rectus give you about a muscle?

Accepted Answer

A) the size of the muscle fibers 
B) the attachment of the muscle fibers 
C) the action of the muscle fibers 
D) the shape of the muscle fibers 
E) the direction of muscle fibers 
A) the size of the muscle fibers 
B) the attachment of the muscle fibers 
C) the action of the muscle fibers 
D) the shape of the muscle fibers 
E) the direction of muscle fibers

Question 4

What is the biggest muscle (in terms of mass)in the body?

Accepted Answer

A) gluteus maximus 
B) sartorius 
C) stapedius 
D) quadriceps femoris 
E) latissimus dorsi 
A) gluteus maximus 
B) sartorius 
C) stapedius 
D) quadriceps femoris 
E) latissimus dorsi

Question 5

Fibromyalgia is a temporary condition of achy muscles,usually due to overuse.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following does not attach to the sternocleidomastoid muscle?

Accepted Answer

A) rib 
B) clavicle 
C) sternum 
D) mastoid process 
E) skull 
A) rib 
B) clavicle 
C) sternum 
D) mastoid process 
E) skull

Question 7

What muscle works in a pair with the biceps brachii?

Accepted Answer

A) the triceps brachii 
B) the trapezius 
C) the masseter 
D) the pectoralis major 
E) the sartorius 
A) the triceps brachii 
B) the trapezius 
C) the masseter 
D) the pectoralis major 
E) the sartorius

Question 8

What structure attaches a muscle to a bone?

Accepted Answer

A) ligaments 
B) tendons 
C) bursae 
D) sarcolemma 
E) sarcoplasm 
A) ligaments 
B) tendons 
C) bursae 
D) sarcolemma 
E) sarcoplasm

Question 9

Which way does the adductor longus move the thigh?

Accepted Answer

A) away from the midline 
B) toward the midline 
C) in a circle 
D) in a cone 
E) towards the back 
A) away from the midline 
B) toward the midline 
C) in a circle 
D) in a cone 
E) towards the back

Question 10

One sarcomere

Accepted Answer

A) extends from Z line to Z line. 
B) is composed of many myofibrils. 
C) contains only actin fibers. 
D) is composed of many muscle fibers. 
E) surrounds each muscle in the body. 
A) extends from Z line to Z line. 
B) is composed of many myofibrils. 
C) contains only actin fibers. 
D) is composed of many muscle fibers. 
E) surrounds each muscle in the body.

Question 11

What happens to the actin and myosin filaments when a muscle contracts?

Accepted Answer

A) both of them shorten 
B) both of them lengthen 
C) both stay the same length 
D) actin shortens while myosin lengthens 
E) myosin shortens while actin lengthens 
A) both of them shorten 
B) both of them lengthen 
C) both stay the same length 
D) actin shortens while myosin lengthens 
E) myosin shortens while actin lengthens

Question 12

Contraction of a muscle requires all the motor units to be undergoing tetanic contraction.

Accepted Answer

A) True 
 B)False

Question 13

When the nerve signal reaches the axon terminal what happens next?

Accepted Answer

A) The muscle contracts. 
B) The synaptic vesicles release neurotransmitter. 
C) An electrical signal is formed that jumps the synaptic cleft. 
D) H+ is pumped into the synaptic cleft. 
E) Myosin is released from the axon terminal. 
A) The muscle contracts. 
B) The synaptic vesicles release neurotransmitter. 
C) An electrical signal is formed that jumps the synaptic cleft. 
D) H+ is pumped into the synaptic cleft. 
E) Myosin is released from the axon terminal.

Question 14

Which disease is an autoimmune disease characterized by weakness that especially affects the muscles of the eyelids,face,neck,and extremities?

Accepted Answer

A) myalgia 
B) muscular dystrophy 
C) myasthenia gravis 
D) tendinitis 
E) bursitis 
A) myalgia 
B) muscular dystrophy 
C) myasthenia gravis 
D) tendinitis 
E) bursitis

Question 15

What is the difference between a tic and a spasm?

Accepted Answer

A) A tic is a spasm that can be controlled voluntarily. 
B) A tic is a strong,and very painful spasm,especially of the leg and foot. 
C) A tic is caused by stretching or tearing of a muscle,while a spasm is just an involuntary contraction. 
D) A tic is caused by the inflammation of a tendon,while a spasm is just an involuntary contraction. 
E) A tic refers to achy muscles,usually due to over exercise,while a spasm is just an involuntary contraction. 
A) A tic is a spasm that can be controlled voluntarily. 
B) A tic is a strong,and very painful spasm,especially of the leg and foot. 
C) A tic is caused by stretching or tearing of a muscle,while a spasm is just an involuntary contraction. 
D) A tic is caused by the inflammation of a tendon,while a spasm is just an involuntary contraction. 
E) A tic refers to achy muscles,usually due to over exercise,while a spasm is just an involuntary contraction.

Question 16

Which of the following is not a source of ATP for muscle contraction?

Accepted Answer

A) ATP in the blood 
B) ATP stored in the cell 
C) the creatine phosphate pathway 
D) fermentation 
E) aerobic respiration 
A) ATP in the blood 
B) ATP stored in the cell 
C) the creatine phosphate pathway 
D) fermentation 
E) aerobic respiration

Question 17

What is the name of the small gap that separates the axon terminal of a nerve from the sarcolemma?

Accepted Answer

A) T tubule 
B) sliding filament 
C) synaptic cleft 
D) synaptic vesicle 
E) sarcoplasmic reticulum 
A) T tubule 
B) sliding filament 
C) synaptic cleft 
D) synaptic vesicle 
E) sarcoplasmic reticulum

Question 18

Which of the following does not occur when a muscle fatigues?

Accepted Answer

A) Its energy reserves are depleted. 
B) Stimulation continues. 
C) Tetanus is achieved. 
D) Acetylcholine is crossing the synaptic cleft. 
E) The muscle relaxes. 
A) Its energy reserves are depleted. 
B) Stimulation continues. 
C) Tetanus is achieved. 
D) Acetylcholine is crossing the synaptic cleft. 
E) The muscle relaxes.

Question 19

What is found within the intercalated disks of cardiac muscle?

Accepted Answer

A) sarcoplasmic reticulum 
B) gap junctions 
C) dense connective tissue 
D) bone 
E) myoglobin 
A) sarcoplasmic reticulum 
B) gap junctions 
C) dense connective tissue 
D) bone 
E) myoglobin

Question 20

Which of the following does not occur when you are very,very cold?

Accepted Answer

A) More blood flows to the surface of the body. 
B) Smooth muscle contracts inside the blood vessels supplying the skin. 
C) The arrector pili muscles contract. 
D) Shivering occurs. 
E) You get goose bumps. 
A) More blood flows to the surface of the body. 
B) Smooth muscle contracts inside the blood vessels supplying the skin. 
C) The arrector pili muscles contract. 
D) Shivering occurs. 
E) You get goose bumps.

Exam 13: Muscular System

A muscle fiber is made up of many

Which of the following is not an energy source for muscle contraction?

What information does the word rectus give you about a muscle?

What is the biggest muscle (in terms of mass)in the body?

Fibromyalgia is a temporary condition of achy muscles,usually due to overuse.

Which of the following does not attach to the sternocleidomastoid muscle?

What muscle works in a pair with the biceps brachii?

What structure attaches a muscle to a bone?

Which way does the adductor longus move the thigh?

One sarcomere

What happens to the actin and myosin filaments when a muscle contracts?

Contraction of a muscle requires all the motor units to be undergoing tetanic contraction.

When the nerve signal reaches the axon terminal what happens next?

Which disease is an autoimmune disease characterized by weakness that especially affects the muscles of the eyelids,face,neck,and extremities?

What is the difference between a tic and a spasm?

Which of the following is not a source of ATP for muscle contraction?

What is the name of the small gap that separates the axon terminal of a nerve from the sarcolemma?

Which of the following does not occur when a muscle fatigues?

What is found within the intercalated disks of cardiac muscle?

Which of the following does not occur when you are very,very cold?

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