Question 1

Which group is incorrect?

Accepted Answer

A)  dysfunction at the neuromuscular junction:botulism,myasthenia gravis 
B)  contractile proteins:thin filaments,myosin,aponeurosis 
C)  terms that describe the muscle activity of a whole muscle:twitch and tetany 
D)  movements:flexion,supination,abduction 
A)  dysfunction at the neuromuscular junction:botulism,myasthenia gravis 
B)  contractile proteins:thin filaments,myosin,aponeurosis 
C)  terms that describe the muscle activity of a whole muscle:twitch and tetany 
D)  movements:flexion,supination,abduction B

Question 2

What is the site of calcium storage in a relaxed skeletal muscle?

Accepted Answer

A)  T-tubule 
B)  neuromuscular junction 
C)  fascicle 
D)  sarcoplasmic reticulum 
A)  T-tubule 
B)  neuromuscular junction 
C)  fascicle 
D)  sarcoplasmic reticulum D

Question 3

Which of the following muscles is described as striated and involuntary?

Accepted Answer

A)  aponeurosis 
B)  smooth 
C)  skeletal 
D)  cardiac 
A)  aponeurosis 
B)  smooth 
C)  skeletal 
D)  cardiac D

Question 4

Actin is

Accepted Answer

A)  located within the neuromuscular junction. 
B)  contractile protein that is called a thin filament. 
C)  called the thick filament. 
D)  stored within the sarcoplasmic reticulum. 
A)  located within the neuromuscular junction. 
B)  contractile protein that is called a thin filament. 
C)  called the thick filament. 
D)  stored within the sarcoplasmic reticulum.

Question 5

The force of muscle contraction is most related to the

Accepted Answer

A)  amount of calcium that is stored within the sarcoplasmic reticulum. 
B)  amount of neurotransmitter released from the prejunctional vesicles. 
C)  numbers of crossbridges formed between actin and myosin. 
D)  size of the somatic motor neuron. 
A)  amount of calcium that is stored within the sarcoplasmic reticulum. 
B)  amount of neurotransmitter released from the prejunctional vesicles. 
C)  numbers of crossbridges formed between actin and myosin. 
D)  size of the somatic motor neuron.

Question 6

This muscle lies along the anterior surface of the humerus and acts synergistically with the brachialis and brachioradialis to flex the arm at the elbow.

Accepted Answer

A)  deltoid 
B)  triceps brachii 
C)  biceps brachii 
D)  latissimus dorsi 
A)  deltoid 
B)  triceps brachii 
C)  biceps brachii 
D)  latissimus dorsi

Question 7

Which group is incorrect?

Accepted Answer

A)  types of striated muscle:skeletal,cardiac,smooth 
B)  movements:extension,pronation,adduction 
C)  movements:flexion,supination,abduction 
D)  muscles of the face:frontalis,buccinator,masseter 
A)  types of striated muscle:skeletal,cardiac,smooth 
B)  movements:extension,pronation,adduction 
C)  movements:flexion,supination,abduction 
D)  muscles of the face:frontalis,buccinator,masseter

Question 8

This muscle attaches to the cranial aponeurosis and wrinkles the forehead.

Accepted Answer

A)  frontalis 
B)  buccinator 
C)  orbicularis oculi 
D)  platysma 
A)  frontalis 
B)  buccinator 
C)  orbicularis oculi 
D)  platysma

Question 9

Which muscle is located in the lower extremities?

Accepted Answer

A)  peroneus longus 
B)  latissimus dorsi 
C)  serratus anterior 
D)  pectoralis major 
A)  peroneus longus 
B)  latissimus dorsi 
C)  serratus anterior 
D)  pectoralis major

Question 10

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 11

Which muscles are located between the ribs and help move the rib cage during breathing?

Accepted Answer

A)  diaphragm 
B)  sternocleidomastoid 
C)  serratus anterior 
D)  intercostal muscles 
A)  diaphragm 
B)  sternocleidomastoid 
C)  serratus anterior 
D)  intercostal muscles

Question 12

Which group is incorrect?

Accepted Answer

A)  muscles in lower extremities:hamstrings,quadriceps,gastrocnemius 
B)  muscles involved in breathing:diaphragm,intercostals,hamstrings 
C)  terms that describe the muscle activity of a whole muscle:twitch and tetany 
D)  muscles in the upper extremities:triceps brachii,biceps brachii,pronator 
A)  muscles in lower extremities:hamstrings,quadriceps,gastrocnemius 
B)  muscles involved in breathing:diaphragm,intercostals,hamstrings 
C)  terms that describe the muscle activity of a whole muscle:twitch and tetany 
D)  muscles in the upper extremities:triceps brachii,biceps brachii,pronator

Question 13

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 14

Which of the following forms crossbridges with actin?

Accepted Answer

A)  sarcoplasmic reticulum 
B)  T-tubules 
C)  myosin 
D)  sarcolemma 
A)  sarcoplasmic reticulum 
B)  T-tubules 
C)  myosin 
D)  sarcolemma

Question 15

This muscle separates the thoracic and abdominal cavities and is also the chief breathing muscle.

Accepted Answer

A)  serratus anterior 
B)  intercostal muscle 
C)  sternocleidomastoid 
D)  diaphragm 
A)  serratus anterior 
B)  intercostal muscle 
C)  sternocleidomastoid 
D)  diaphragm

Question 16

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 17

The sarcoplasmic reticulum

Accepted Answer

A)  stores ACh. 
B)  is located within the neuromuscular junction. 
C)  envelops the sarcomere-containing myofibrils. 
D)  is a contractile protein. 
A)  stores ACh. 
B)  is located within the neuromuscular junction. 
C)  envelops the sarcomere-containing myofibrils. 
D)  is a contractile protein.

Question 18

What is the function of the masseter muscle?

Accepted Answer

A)  adducts the thigh 
B)  chews food 
C)  lifts the eyelid 
D)  flexes the arm 
A)  adducts the thigh 
B)  chews food 
C)  lifts the eyelid 
D)  flexes the arm

Question 19

This muscle is located on the posterior area of the body.

Accepted Answer

A)  latissimus dorsi 
B)  pectoralis major 
C)  quadriceps femoris 
D)  sternocleidomastoid 
A)  latissimus dorsi 
B)  pectoralis major 
C)  quadriceps femoris 
D)  sternocleidomastoid

Question 20

The Achilles tendon attaches the soleus and this 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

Exam 9: Muscular System

Which group is incorrect?

What is the site of calcium storage in a relaxed skeletal muscle?

Which of the following muscles is described as striated and involuntary?

Actin is

The force of muscle contraction is most related to the

This muscle lies along the anterior surface of the humerus and acts synergistically with the brachialis and brachioradialis to flex the arm at the elbow.

Which group is incorrect?

This muscle attaches to the cranial aponeurosis and wrinkles the forehead.

Which muscle is located in the lower extremities?

Which muscle covers the shoulder like a shoulder pad?

Which muscles are located between the ribs and help move the rib cage during breathing?

Which group is incorrect?

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

Which of the following forms crossbridges with actin?

This muscle separates the thoracic and abdominal cavities and is also the chief breathing muscle.

Which of the following is responsible for muscle relaxation?

The sarcoplasmic reticulum

What is the function of the masseter muscle?

This muscle is located on the posterior area of the body.

The Achilles tendon attaches the soleus and this muscle to the calcaneus.

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

Heart

Function of the Heart

Anatomy of the Blood Vessels

Functions of the Blood Vessels

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water,Electrolyte,and Acid-Base Balance

Reproductive Systems

Human Development and Heredity

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