Question 1

Although there are no sarcomeres, smooth muscle still possesses thick and thin filaments.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following describes the cells of unitary smooth muscle?

Accepted Answer

A)  They consist of muscle fibers that are structurally independent of each other. 
B)  They exhibit spontaneous action potentials. 
C)  They depend upon recruitment using the autonomic nervous system. 
D)  They are used for vision and hair raising. 
A)  They consist of muscle fibers that are structurally independent of each other. 
B)  They exhibit spontaneous action potentials. 
C)  They depend upon recruitment using the autonomic nervous system. 
D)  They are used for vision and hair raising.

Question 3

After nervous stimulation stops, what prevents ACh in the synaptic cleft from continuing to stimulate contraction?

Accepted Answer

A)  acetylcholinesterase breaks apart the ACh 
B)  the action potential stops going down the overloaded T tubules 
C)  calcium ions returning to the terminal cisternae 
D)  the tropomyosin blocking the myosin once full contraction is achieved 
A)  acetylcholinesterase breaks apart the ACh 
B)  the action potential stops going down the overloaded T tubules 
C)  calcium ions returning to the terminal cisternae 
D)  the tropomyosin blocking the myosin once full contraction is achieved

Question 4

A skeletal muscle contracts with varying force and length of time in response to the body's needs at the time.

Accepted Answer

A) True 
 B)False

Question 5

How is it that norepinephrine (NE) can inhibit smooth muscle action in airways, yet stimulate contractions in smooth muscles everywhere else in the body?

Accepted Answer

Norepinephrine's effects depen

Question 6

Caveolae are an anatomical feature of smooth muscle. Describe this anatomical feature and specifically how it improves smooth muscles' response to nervous stimulation

Accepted Answer

Caveolae are pouch like inhold

Question 7

Which of the following is true about smooth muscle?

Accepted Answer

A)  Smooth muscle has well-developed T tubules at the site of invagination. 
B)  Certain smooth muscle cells can actually divide to increase their numbers. 
C)  Smooth muscle cannot stretch as much as skeletal muscle. 
D)  Smooth muscle, in contrast to skeletal muscle, cannot synthesize or secrete any connective tissue elements. 
A)  Smooth muscle has well-developed T tubules at the site of invagination. 
B)  Certain smooth muscle cells can actually divide to increase their numbers. 
C)  Smooth muscle cannot stretch as much as skeletal muscle. 
D)  Smooth muscle, in contrast to skeletal muscle, cannot synthesize or secrete any connective tissue elements.

Question 8

During isometric contraction, the energy used appears as movement.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following statements is true?

Accepted Answer

A)  Cardiac muscle cells are found in the heart and large blood vessels. 
B)  Cardiac muscle cells have many nuclei. 
C)  Striated muscle cells are long and cylindrical with many nuclei. 
D)  Smooth muscle cells have T tubules. 
A)  Cardiac muscle cells are found in the heart and large blood vessels. 
B)  Cardiac muscle cells have many nuclei. 
C)  Striated muscle cells are long and cylindrical with many nuclei. 
D)  Smooth muscle cells have T tubules.

Question 10

Which of the following is a factor that affects the velocity and duration of muscle contraction?

Accepted Answer

A)  size of the muscle fibers stimulated 
B)  muscle length 
C)  load on the fiber 
D)  number of muscle fibers stimulated 
A)  size of the muscle fibers stimulated 
B)  muscle length 
C)  load on the fiber 
D)  number of muscle fibers stimulated

Question 11

What is the primary function of wave summation?

Accepted Answer

A)  prevent muscle relaxation 
B)  prevent muscle fatigue 
C)  produce smooth, continuous muscle contraction 
D)  increase muscle tension 
A)  prevent muscle relaxation 
B)  prevent muscle fatigue 
C)  produce smooth, continuous muscle contraction 
D)  increase muscle tension

Question 12

When a geriatric patient is admitted to the postsurgical unit, an important nursing measure is to prevent the loss of muscle mass. What is the term used for loss of muscle mass and how can the patient prevent it?

Accepted Answer

Disuse atrophy is degeneration and loss

Question 13

The end of the muscle that is attached to the part of the body in motion when a muscle contracts is called the__________.

Accepted Answer

The answer of The end of the muscle that is...

Question 14

Only __________muscle cells have intercalated discs at their gap junctions.

Accepted Answer

The answer of Only __________muscle cells have intercalated discs at...

Question 15

Peristalsis is characteristic of smooth muscle.

Accepted Answer

A) True 
 B)False

Question 16

Only__________ muscle cells are multinucleated.

Accepted Answer

The answer of Only__________ muscle cells are multinucleated....

Question 17

A 5-year-old male is diagnosed with Duchenne muscular dystrophy (DMD). Discuss what this means in terms of the boy's muscles and what should his parents expect to observe.

Accepted Answer

Duchenne muscular dystrophy is a muscle

Question 18

A potential benefit of recruiting slow oxidative fibers for contraction before recruiting fast oxidative and fast glycolytic fibers might be __________.

Accepted Answer

A)  to allow for fine control with delicate contractile force with a small stimulus 
B)  recruiting slow oxidative fibers early helps to tire them out first so that they won't interfere with the more powerful contractions of fast glycolytic fibers 
C)  because they are slower to respond, slow oxidative fibers must be stimulated first in order to contract simultaneously with the faster fibers 
D)  There is little to no benefit from recruiting slow oxidative fibers first, and therefore it is in fact fast glycolytic fibers that will be recruited first. 
A)  to allow for fine control with delicate contractile force with a small stimulus 
B)  recruiting slow oxidative fibers early helps to tire them out first so that they won't interfere with the more powerful contractions of fast glycolytic fibers 
C)  because they are slower to respond, slow oxidative fibers must be stimulated first in order to contract simultaneously with the faster fibers 
D)  There is little to no benefit from recruiting slow oxidative fibers first, and therefore it is in fact fast glycolytic fibers that will be recruited first.

Question 19

What does excess postexercise oxygen consumption represent?

Accepted Answer

A)  the amount of oxygen taken into the body immediately after the exertion 
B)  amount of oxygen needed for aerobic activity to accomplish the same amount of work 
C)  the amount of oxygen equal to the oxygen already used 
D)  the difference between the amount of oxygen needed for totally aerobic muscle activity and the amount actually used 
A)  the amount of oxygen taken into the body immediately after the exertion 
B)  amount of oxygen needed for aerobic activity to accomplish the same amount of work 
C)  the amount of oxygen equal to the oxygen already used 
D)  the difference between the amount of oxygen needed for totally aerobic muscle activity and the amount actually used

Question 20

The contractile units of skeletal muscles are_________ .

Accepted Answer

A)  myofibrils 
B)  mitochondria 
C)  microtubules 
D)  T tubules 
A)  myofibrils 
B)  mitochondria 
C)  microtubules 
D)  T tubules

Although there are no sarcomeres, smooth muscle still possesses thick and thin filaments.

Which of the following describes the cells of unitary smooth muscle?

After nervous stimulation stops, what prevents ACh in the synaptic cleft from continuing to stimulate contraction?

A skeletal muscle contracts with varying force and length of time in response to the body's needs at the time.

How is it that norepinephrine (NE) can inhibit smooth muscle action in airways, yet stimulate contractions in smooth muscles everywhere else in the body?

Caveolae are an anatomical feature of smooth muscle. Describe this anatomical feature and specifically how it improves smooth muscles' response to nervous stimulation

Which of the following is true about smooth muscle?

During isometric contraction, the energy used appears as movement.

Which of the following statements is true?

Which of the following is a factor that affects the velocity and duration of muscle contraction?

What is the primary function of wave summation?

When a geriatric patient is admitted to the postsurgical unit, an important nursing measure is to prevent the loss of muscle mass. What is the term used for loss of muscle mass and how can the patient prevent it?

The end of the muscle that is attached to the part of the body in motion when a muscle contracts is called the__________.

Only __________muscle cells have intercalated discs at their gap junctions.

Peristalsis is characteristic of smooth muscle.

Only__________ muscle cells are multinucleated.

A 5-year-old male is diagnosed with Duchenne muscular dystrophy (DMD). Discuss what this means in terms of the boy's muscles and what should his parents expect to observe.

A potential benefit of recruiting slow oxidative fibers for contraction before recruiting fast oxidative and fast glycolytic fibers might be __________.

What does excess postexercise oxygen consumption represent?

The contractile units of skeletal muscles are_________ .

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissues

The Skeleton

Joints

The Muscular System

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

Filters

Exam 9: Muscles and Muscle Tissue

Although there are no sarcomeres, smooth muscle still possesses thick and thin filaments.

Which of the following describes the cells of unitary smooth muscle?

After nervous stimulation stops, what prevents ACh in the synaptic cleft from continuing to stimulate contraction?

A skeletal muscle contracts with varying force and length of time in response to the body's needs at the time.

How is it that norepinephrine (NE) can inhibit smooth muscle action in airways, yet stimulate contractions in smooth muscles everywhere else in the body?

Caveolae are an anatomical feature of smooth muscle. Describe this anatomical feature and specifically how it improves smooth muscles' response to nervous stimulation

Which of the following is true about smooth muscle?

During isometric contraction, the energy used appears as movement.

Which of the following statements is true?

Which of the following is a factor that affects the velocity and duration of muscle contraction?

What is the primary function of wave summation?

When a geriatric patient is admitted to the postsurgical unit, an important nursing measure is to prevent the loss of muscle mass. What is the term used for loss of muscle mass and how can the patient prevent it?

The end of the muscle that is attached to the part of the body in motion when a muscle contracts is called the__________.

Only __________muscle cells have intercalated discs at their gap junctions.

Peristalsis is characteristic of smooth muscle.

Only__________ muscle cells are multinucleated.

A 5-year-old male is diagnosed with Duchenne muscular dystrophy (DMD). Discuss what this means in terms of the boy's muscles and what should his parents expect to observe.

A potential benefit of recruiting slow oxidative fibers for contraction before recruiting fast oxidative and fast glycolytic fibers might be __________.

What does excess postexercise oxygen consumption represent?

The contractile units of skeletal muscles are_________ .

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissues

The Skeleton

Joints

The Muscular System

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

Filters