Question 1

The rotator cuff muscles

Accepted Answer

A)  stabilize the shoulder joint. 
B)  include the biceps femoris, semitendinosus, and semimembranosus. 
C)  attach the radius and ulna to the humerus. 
D)  include the quadriceps femoris, vastus lateralis, and vastus medialis. 
A)  stabilize the shoulder joint. 
B)  include the biceps femoris, semitendinosus, and semimembranosus. 
C)  attach the radius and ulna to the humerus. 
D)  include the quadriceps femoris, vastus lateralis, and vastus medialis.

Question 2

Fascicles are

Accepted Answer

A)  muscle fibers bound together by connective tissue. 
B)  ACh-filled vesicles. 
C)  ATP-filled vesicles. 
D)  contractile proteins. 
A)  muscle fibers bound together by connective tissue. 
B)  ACh-filled vesicles. 
C)  ATP-filled vesicles. 
D)  contractile proteins.

Question 3

Which of the following muscles is (are)located on the posterior body?

Accepted Answer

A)  Pectoralis major 
B)  Latissimus dorsi 
C)  Quadriceps femoris 
D)  Rectus abdominis, transversus abdominis, internal oblique, external oblique 
A)  Pectoralis major 
B)  Latissimus dorsi 
C)  Quadriceps femoris 
D)  Rectus abdominis, transversus abdominis, internal oblique, external oblique

Question 4

The rectus,transversus,internal oblique,and external oblique refer to

Accepted Answer

A)  smooth muscles. 
B)  abdominal muscles. 
C)  breathing muscles. 
D)  muscles that are located on the back and work synergistically with the latissimus dorsi. 
A)  smooth muscles. 
B)  abdominal muscles. 
C)  breathing muscles. 
D)  muscles that are located on the back and work synergistically with the latissimus dorsi.

Question 5

Which type of muscle requires stimulation by a somatic motor neuron?

Accepted Answer

A)  Visceral 
B)  Smooth 
C)  Cardiac 
D)  Skeletal 
A)  Visceral 
B)  Smooth 
C)  Cardiac 
D)  Skeletal

Question 6

The biceps femoris,semitendinosus,and semimembranosus

Accepted Answer

A)  flex the foot. 
B)  attach to the patella. 
C)  are the hamstrings. 
D)  are located on the anterior thigh. 
A)  flex the foot. 
B)  attach to the patella. 
C)  are the hamstrings. 
D)  are located on the anterior thigh.

Question 7

As the electrical signal travels through the T tubules,it causes the

Accepted Answer

A)  release of calcium from the sarcoplasmic reticulum. 
B)  release of the neurotransmitter ACh from the axon terminal in the neuromuscular junction. 
C)  inactivation of the ACh within the neuromuscular junction. 
D)  myosin heads to detach from the actin. 
A)  release of calcium from the sarcoplasmic reticulum. 
B)  release of the neurotransmitter ACh from the axon terminal in the neuromuscular junction. 
C)  inactivation of the ACh within the neuromuscular junction. 
D)  myosin heads to detach from the actin.

Question 8

Which of the following is a series of contractile units that make up each myofibril (each unit extends from Z line to Z line)?

Accepted Answer

A)  Sarcomeres 
B)  Synapses 
C)  Fascicles 
D)  Sarcoplasmic reticulum 
A)  Sarcomeres 
B)  Synapses 
C)  Fascicles 
D)  Sarcoplasmic reticulum

Question 9

Acetylcholine is released from the prejunctional membrane in response to the

Accepted Answer

A)  nerve impulse. 
B)  binding of the myosin heads to actin. 
C)  release of calcium from the sarcoplasmic reticulum. 
D)  inactivation of acetylcholinesterase. 
A)  nerve impulse. 
B)  binding of the myosin heads to actin. 
C)  release of calcium from the sarcoplasmic reticulum. 
D)  inactivation of acetylcholinesterase.

Question 10

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 11

Which of the following activates the NM receptors within the neuromuscular junction?

Accepted Answer

A)  Acetylcholinesterase 
B)  Calcium 
C)  Troponin 
D)  ACh 
A)  Acetylcholinesterase 
B)  Calcium 
C)  Troponin 
D)  ACh

Question 12

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 13

Which of the following is not a facial muscle?

Accepted Answer

A)  Orbicularis oculi 
B)  Zygomaticus 
C)  Sternocleidomastoid 
D)  Frontalis 
A)  Orbicularis oculi 
B)  Zygomaticus 
C)  Sternocleidomastoid 
D)  Frontalis

Question 14

"Pumping iron" is most likely to cause

Accepted Answer

A)  atrophy. 
B)  contracture formation. 
C)  hypertrophy. 
D)  muscular dystrophy. 
A)  atrophy. 
B)  contracture formation. 
C)  hypertrophy. 
D)  muscular dystrophy.

Question 15

Joey has had his leg in a non-weight-bearing cast for 8 weeks.When the cast is removed,the diameter of the leg appears smaller than the uninjured leg.Which term best describes this observation?

Accepted Answer

A)  Contracture 
B)  Hypertrophy 
C)  Muscle dystrophy 
D)  Disuse atrophy 
A)  Contracture 
B)  Hypertrophy 
C)  Muscle dystrophy 
D)  Disuse atrophy

Question 16

Which of the following is true of the hamstrings?

Accepted Answer

A)  Extension of the thigh 
B)  Forms posterior fossa 
C)  Biceps femoris 
D)  All of the above 
A)  Extension of the thigh 
B)  Forms posterior fossa 
C)  Biceps femoris 
D)  All of the above

Question 17

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 18

Recruitment increases the

Accepted Answer

A)  force of muscle contraction. 
B)  amount of cholinesterase in the neuromuscular junction. 
C)  number of motor units that are activated. 
D)  Two of the above are true. 
A)  force of muscle contraction. 
B)  amount of cholinesterase in the neuromuscular junction. 
C)  number of motor units that are activated. 
D)  Two of the above are true.

Question 19

On which large muscle do you sit?

Accepted Answer

A)  Latissimus dorsi 
B)  Gastrocnemius 
C)  Gluteus maximus 
D)  Rectus femoris 
A)  Latissimus dorsi 
B)  Gastrocnemius 
C)  Gluteus maximus 
D)  Rectus femoris

Question 20

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

Exam 9: Muscular System

The rotator cuff muscles

Fascicles are

Which of the following muscles is (are)located on the posterior body?

The rectus,transversus,internal oblique,and external oblique refer to

Which type of muscle requires stimulation by a somatic motor neuron?

The biceps femoris,semitendinosus,and semimembranosus

As the electrical signal travels through the T tubules,it causes the

Which of the following is a series of contractile units that make up each myofibril (each unit extends from Z line to Z line)?

Acetylcholine is released from the prejunctional membrane in response to the

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

Which of the following activates the NM receptors within the neuromuscular junction?

Muscle relaxation

Which of the following is not a facial muscle?

"Pumping iron" is most likely to cause

Joey has had his leg in a non-weight-bearing cast for 8 weeks.When the cast is removed,the diameter of the leg appears smaller than the uninjured leg.Which term best describes this observation?

Which of the following is true of the hamstrings?

The orbicularis oculi

Recruitment increases the

On which large muscle do you sit?

The Achilles tendon attaches the soleus and which 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

Anatomy of the 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

Filters