Question 1

Which of the following is an event that occurs within the neuromuscular junction?

Accepted Answer

A) Sliding of actin and myosin 
B) Pumping of calcium back into the SR 
C) Binding of the acetylcholine to the nicotinic receptor on the muscle membrane 
D) Release of calcium from the sarcoplasmic reticulum 
A) Sliding of actin and myosin 
B) Pumping of calcium back into the SR 
C) Binding of the acetylcholine to the nicotinic receptor on the muscle membrane 
D) Release of calcium from the sarcoplasmic reticulum

Question 2

The gastrocnemius and the soleus are commonly called the

Accepted Answer

A) swimmer's muscles. 
B) toe dancer's muscles. 
C) rotator cuff muscles. 
D) trumpeter's muscles. 
A) swimmer's muscles. 
B) toe dancer's muscles. 
C) rotator cuff muscles. 
D) trumpeter's muscles.

Question 3

Which of the following is responsible for muscle relaxation?

Accepted Answer

A) The sarcomere runs out of ATP. 
B) Calcium floods the area of the sarcomere,allowing for the interaction of actin and myosin. 
C) Calcium is pumped back into the sarcoplasmic reticulum. 
D) Acetylcholinesterase in the neuromuscular junction is depleted. 
A) The sarcomere runs out of ATP. 
B) Calcium floods the area of the sarcomere,allowing for the interaction of actin and myosin. 
C) Calcium is pumped back into the sarcoplasmic reticulum. 
D) Acetylcholinesterase in the neuromuscular junction is depleted.

Question 4

Which of the following is least related to the platysma?

Accepted Answer

A) Pouting muscle 
B) Squinting 
C) Inserts on the mandible 
D) "Close your mouth," says the dentist 
A) Pouting muscle 
B) Squinting 
C) Inserts on the mandible 
D) "Close your mouth," says the dentist

Question 5

Which muscle lies along the posterior surface of the arm and extends the forearm and is used to bear weight in crutch walking?

Accepted Answer

A) Biceps brachii 
B) Biceps femoris 
C) Deltoid 
D) Triceps brachii 
A) Biceps brachii 
B) Biceps femoris 
C) Deltoid 
D) Triceps brachii

Question 6

This muscle group attaches to the linea alba.

Accepted Answer

A) Hamstrings 
B) Adductors 
C) Abdominal 
D) Muscles of respiration 
A) Hamstrings 
B) Adductors 
C) Abdominal 
D) Muscles of respiration

Question 7

The rectus femoris,vastus lateralis,vastus medialis,and vastus intermedius

Accepted Answer

A) insert on the calcaneus. 
B) flex the leg at the knee. 
C) are antagonistic to the quadriceps femoris. 
D) are the muscles of the quadriceps femoris. 
A) insert on the calcaneus. 
B) flex the leg at the knee. 
C) are antagonistic to the quadriceps femoris. 
D) are the muscles of the quadriceps femoris.

Question 8

Which of the following describes a muscle that remains in a contracted state?

Accepted Answer

A) Twitch 
B) Tetany 
C) Atrophy 
D) Hypertrophy 
A) Twitch 
B) Tetany 
C) Atrophy 
D) Hypertrophy

Question 9

This muscle flattens the cheek and positions the food between the teeth.

Accepted Answer

A) Masseter 
B) Temporalis 
C) Buccinator 
D) Zygomaticus 
A) Masseter 
B) Temporalis 
C) Buccinator 
D) Zygomaticus

Question 10

Which of the following normally terminates muscle contraction?

Accepted Answer

A) Depletion of ACh in the neuromuscular junction 
B) Binding of ACh to the NM receptors 
C) Pumping of calcium back into the sarcoplasmic reticulum 
D) Depletion of ATP within the sarcomere 
A) Depletion of ACh in the neuromuscular junction 
B) Binding of ACh to the NM receptors 
C) Pumping of calcium back into the sarcoplasmic reticulum 
D) Depletion of ATP within the sarcomere

Question 11

The Achilles tendon attaches the soleus and which muscle to the calcaneus?

Accepted Answer

A) Sartorius 
B) Quadriceps femoris 
C) Gastrocnemius 
D) Vastus lateralis 
A) Sartorius 
B) Quadriceps femoris 
C) Gastrocnemius 
D) Vastus lateralis

Question 12

The somatic motor nerve that supplies the muscles of the thigh has been severed; therefore,the person

Accepted Answer

A) will be able to walk only if he or she receives IV calcium. 
B) cannot walk. 
C) can walk but has no feeling in the lower extremities. 
D) can stand but cannot walk. 
A) will be able to walk only if he or she receives IV calcium. 
B) cannot walk. 
C) can walk but has no feeling in the lower extremities. 
D) can stand but cannot walk.

Question 13

Which of the following "slide" in the sliding filament hypothesis?

Accepted Answer

A) Calcium and ATP 
B) Sarcoplasm and T tubules 
C) Actin and myosin 
D) Epimysium and perimysium 
A) Calcium and ATP 
B) Sarcoplasm and T tubules 
C) Actin and myosin 
D) Epimysium and perimysium

Question 14

Muscle relaxation

Accepted Answer

A) is a response to the binding of ACh to the receptor. 
B) occurs when calcium is pumped back into the sarcoplasmic reticulum. 
C) is a response to the inactivation of acetylcholinesterase by ACh. 
D) occurs when the tendons lengthen. 
A) is a response to the binding of ACh to the receptor. 
B) occurs when calcium is pumped back into the sarcoplasmic reticulum. 
C) is a response to the inactivation of acetylcholinesterase by ACh. 
D) occurs when the tendons lengthen.

Question 15

The ___________________ inserts on the quadriceps ligament,causing extension of the leg at the knee.

Accepted Answer

A) rectus femoris 
B) semimembranosus 
C) gastrocnemius 
D) sartorius 
A) rectus femoris 
B) semimembranosus 
C) gastrocnemius 
D) sartorius

Question 16

Which of the following is least related to the rectus femoris?

Accepted Answer

A) Quadriceps femoris 
B) Anterior thigh 
C) Flexion of thigh at hip 
D) Forms the popliteal fossa 
A) Quadriceps femoris 
B) Anterior thigh 
C) Flexion of thigh at hip 
D) Forms the popliteal fossa

Question 17

The somatic motor neuron

Accepted Answer

A) causes release of ACh into the NMJ. 
B) stimulates the SR to release calcium into the sarcomeres. 
C) moves the tropomyosin away from the myosin binding sites on actin. 
D) stimulates the axon terminal to release calcium into the NMJ. 
A) causes release of ACh into the NMJ. 
B) stimulates the SR to release calcium into the sarcomeres. 
C) moves the tropomyosin away from the myosin binding sites on actin. 
D) stimulates the axon terminal to release calcium into the NMJ.

Question 18

The orbicularis oculi

Accepted Answer

A) encircles the eye. 
B) is the kissing muscle. 
C) purses the lips. 
D) lifts the eyelid. 
A) encircles the eye. 
B) is the kissing muscle. 
C) purses the lips. 
D) lifts the eyelid.

Question 19

Which muscle covers the shoulder like a shoulder pad?

Accepted Answer

A) Deltoid 
B) Trapezius 
C) Biceps brachii 
D) Sternocleidomastoid 
A) Deltoid 
B) Trapezius 
C) Biceps brachii 
D) Sternocleidomastoid

Question 20

Which of the following "muscle words" refers to the chest?

Accepted Answer

A) Rectus 
B) Latissimus 
C) Vastus 
D) Pectoralis 
A) Rectus 
B) Latissimus 
C) Vastus 
D) Pectoralis

Exam 9: Muscular System

Which of the following is an event that occurs within the neuromuscular junction?

The gastrocnemius and the soleus are commonly called the

Which of the following is responsible for muscle relaxation?

Which of the following is least related to the platysma?

Which muscle lies along the posterior surface of the arm and extends the forearm and is used to bear weight in crutch walking?

This muscle group attaches to the linea alba.

The rectus femoris,vastus lateralis,vastus medialis,and vastus intermedius

Which of the following describes a muscle that remains in a contracted state?

This muscle flattens the cheek and positions the food between the teeth.

Which of the following normally terminates muscle contraction?

The Achilles tendon attaches the soleus and which muscle to the calcaneus?

The somatic motor nerve that supplies the muscles of the thigh has been severed; therefore,the person

Which of the following "slide" in the sliding filament hypothesis?

Muscle relaxation

The ___________________ inserts on the quadriceps ligament,causing extension of the leg at the knee.

Which of the following is least related to the rectus femoris?

The somatic motor neuron

The orbicularis oculi

Which muscle covers the shoulder like a shoulder pad?

Which of the following "muscle words" refers to the chest?

Introduction to the Human Body

Basic Chemistry

Cells

Cell Metabolism

Microbiology Basics

Tissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Nervous System: Nervous Tissue and Brain

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Endocrine System

Blood

Anatomy of the Heart

Function of the Heart

Anatomy of the Blood Vessels and Special Circulations

Functions of the Blood Vessels

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water, Electrolyte, and Acidbase Balance

Reproductive Systems

Human Development and Heredity

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