Chapter 12: Physiology of the Muscular System

Chapter 12: Physiology of the Muscular System

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below 

 

Chapter 12-A: Physiology of the Muscular System

 

Test Bank

 

TRUE/FALSE

 

1. Myofibrils contain several sarcomeres lined up end to end.

 

ANS:   T                      DIF:    Application     REF:    Page 350

TOP:    Overview of Muscle Cells

 

2. Another name for muscle cells is muscle fibers.

 

ANS:   T                      DIF:    Memorization                                     REF:    Page 348

TOP:    Overview of Muscle Cells

 

3. Muscle cells have one nucleus and one mitochondrion.

 

ANS:   F                      DIF:    Synthesis        REF:    Page 348

TOP:    Overview of Muscle Cells

 

4. Muscle fibers of skeletal muscle contain several nuclei.

 

ANS:   T                      DIF:    Memorization                                     REF:    Page 348

TOP:    Overview of Muscle Cells

 

5. A triad consists of a T-tubule sandwiched between sacs of the sarcoplasmic reticulum.

 

ANS:   T                      DIF:    Memorization                                     REF:    Page 350

TOP:    Overview of Muscle Cells

 

6. The following are characteristics that allow muscles to function as they do: excitability, contractility, extensibility, and regulation.

 

ANS:   F                      DIF:    Application     REF:    Page 348

TOP:    Functions of Skeletal Muscle Tissue

 

7. The cell membrane of a muscle fiber is called the sarcoplasmic reticulum.

 

ANS:   F                      DIF:    Application     REF:    Page 348

TOP:    Overview of Muscle Cells

 

 

MULTIPLE CHOICE

 

1. Which of the following is not one of the major functions of muscles?

a.	Movement
b.	Protection
c.	Heat production
d.	Posture

 

ANS:   B                     DIF:    Memorization                                     REF:    Page 348

TOP:    General Functions

 

2. The plasma membrane of a muscle fiber is called the:

a.	sarcolemma.
b.	myofibril.
c.	sarcoplasm.
d.	sarcomere.

 

ANS:   A                     DIF:    Memorization                                     REF:    Page 348

TOP:    Overview of Muscle Cells

 

3. Bundles of fine fibers that extend lengthwise along muscle fibers are called:

a.	myofibrils.
b.	myofilaments.
c.	striae.
d.	sarcoplasmic reticulum.

 

ANS:   A                     DIF:    Memorization                                     REF:    Page 350

TOP:    Overview of Muscle Cells

 

4. The smallest contractile unit of muscle is a:

a.	fiber.
b.	myofibril.
c.	sarcomere.
d.	myofilament.

 

ANS:   C                     DIF:    Memorization                                     REF:    Page 350

TOP:    Overview of Muscle Cells

 

5. _____ muscle is also known as striated muscle.

a.	Smooth
b.	Skeletal
c.	Involuntary
d.	Visceral

 

ANS:   B                     DIF:    Memorization                                     REF:    Page 350

TOP:    Overview of Muscle Cells