Question 1

During a concentric muscle contraction, _______ moves along _______ toward the M line.

Accepted Answer

A)  actin; myosin 
B)  myosin; actin 
C)  tropomyosin; actin 
D)  tropomyosin; troponin 
A)  actin; myosin 
B)  myosin; actin 
C)  tropomyosin; actin 
D)  tropomyosin; troponin A

Question 2

Glycolysis results in the breakdown of glucose into

Accepted Answer

A)  creatine 
B)  fatty acids 
C)  lactic acid 
D)  pyruvic acid 
A)  creatine 
B)  fatty acids 
C)  lactic acid 
D)  pyruvic acid D

Question 3

Which process requires sufficient oxygen to occur?

Accepted Answer

A)  aerobic respiration 
B)  anaerobic glycolysis 
C)  creatine phosphate reaction 
D)  aerobic respiration and anaerobic glycolysis 
A)  aerobic respiration 
B)  anaerobic glycolysis 
C)  creatine phosphate reaction 
D)  aerobic respiration and anaerobic glycolysis A

Question 4

Another name for single-unit smooth muscle is ______ smooth muscle

Accepted Answer

The answer of Another name for single-unit smooth muscle is...

Question 5

A whole muscle is controlled by activation of a single motor unit.

Accepted Answer

A) True 
 B)False

Question 6

During an isotonic muscle contraction, what happens to the H zone?

Accepted Answer

A)  it does not change 
B)  it gets longer 
C)  it gets shorter 
D)  it gets longer and shorter, successively 
A)  it does not change 
B)  it gets longer 
C)  it gets shorter 
D)  it gets longer and shorter, successively

Question 7

Marathon runners often complete their events between 4 and 5 hours. Throughout the majority of this endurance event, which process is producing ATP?

Accepted Answer

A)  anaerobic respiration 
B)  aerobic respiration 
C)  glycolysis fermentation 
D)  creatine phosphate reaction 
A)  anaerobic respiration 
B)  aerobic respiration 
C)  glycolysis fermentation 
D)  creatine phosphate reaction

Question 8

Sarcomeres are present in which type(s) of muscle?

Accepted Answer

A)  cardiac and skeletal 
B)  cardiac, skeletal and smooth 
C)  skeletal and smooth 
D)  skeletal only 
A)  cardiac and skeletal 
B)  cardiac, skeletal and smooth 
C)  skeletal and smooth 
D)  skeletal only

Question 9

At low concentrations, the plant alkaloid ryanodine locks ryanodine receptors into a half open state, allowing Ca2+ to flow. How will the actions of ryanodine compare between skeletal and cardiac muscle?

Accepted Answer

A)  skeletal muscle will be activated, but cardiac muscle will not be activated 
B)  skeletal muscle will not be activated, but cardiac muscle will 
C)  skeletal and cardiac muscle will both be activated 
D)  skeletal and cardiac muscle will both be activated only if dihydropyridine is also present 
A)  skeletal muscle will be activated, but cardiac muscle will not be activated 
B)  skeletal muscle will not be activated, but cardiac muscle will 
C)  skeletal and cardiac muscle will both be activated 
D)  skeletal and cardiac muscle will both be activated only if dihydropyridine is also present

Question 10

Which of the following muscle functions can explain why your head falls down when you begin to fall asleep during class?

Accepted Answer

A)  production of body movement 
B)  storage and movement of substances within the body 
C)  thermogenesis 
D)  stabilization of body position 
A)  production of body movement 
B)  storage and movement of substances within the body 
C)  thermogenesis 
D)  stabilization of body position

Question 11

After eating some questionable taco meat, your friend Joshua begins to throw up those risky tacos he ate only a few hours before. Which muscle function best explains why this might have occurred?

Accepted Answer

A)  production of body movement 
B)  storage and movement of substances within the body 
C)  thermogenesis 
D)  stabilization of body position 
A)  production of body movement 
B)  storage and movement of substances within the body 
C)  thermogenesis 
D)  stabilization of body position

Question 12

Larry is stretching out his leg muscles before going for a run. Which property of muscle allows Larry to do this without hurting himself?

Accepted Answer

A)  contractility 
B)  elasticity 
C)  electrical excitability 
D)  extensibility 
A)  contractility 
B)  elasticity 
C)  electrical excitability 
D)  extensibility

Question 13

Which type(s) of muscle cells contribute to homeostasis?

Accepted Answer

A)  cardiac 
B)  skeletal 
C)  smooth 
D)  All of the choices are correct. 
A)  cardiac 
B)  skeletal 
C)  smooth 
D)  All of the choices are correct.

Question 14

Which type(s) of muscle contraction can be regulated by norepinephrine?

Accepted Answer

A)  cardiac only 
B)  cardiac and skeletal 
C)  cardiac and smooth 
D)  cardiac, skeletal and smooth 
A)  cardiac only 
B)  cardiac and skeletal 
C)  cardiac and smooth 
D)  cardiac, skeletal and smooth

Question 15

Which molecule can be used to quickly regenerate ATP by a direct phosphorylation reaction?

Accepted Answer

A)  creatine phosphate 
B)  glycogen 
C)  lactic acid 
D)  pyruvate 
A)  creatine phosphate 
B)  glycogen 
C)  lactic acid 
D)  pyruvate

Question 16

A somatic motor neuron releases _____ onto skeletal muscle to cause it to contract.

Accepted Answer

The answer of A somatic motor neuron releases _____ onto...

Question 17

Which type(s) of muscle fibers has/have the most creatine phosphate?

Accepted Answer

A)  fast glycolytic 
B)  slow oxidative 
C)  fast oxidative glycolytic 
D)  All of the choices have equal amounts. 
A)  fast glycolytic 
B)  slow oxidative 
C)  fast oxidative glycolytic 
D)  All of the choices have equal amounts.

Question 18

Jimothy is out cutting firewood with his dad and when they finish they need to carry it back to their campsite. Jimothy wants to impress his dad with how much would he can carry. What would be the most efficient way for him to carry the most wood while using the least amount of energy?

Accepted Answer

A)  loading as many logs as close to his elbows as possible 
B)  loading as many logs in his hands as possible 
C)  loading some logs near his elbows and most on his hands 
D)  loading some logs near his hands and making multiple trips 
A)  loading as many logs as close to his elbows as possible 
B)  loading as many logs in his hands as possible 
C)  loading some logs near his elbows and most on his hands 
D)  loading some logs near his hands and making multiple trips

Question 19

Which of the following would increase the tension produced by a skeletal muscle contraction?

Accepted Answer

A)  increased recruitment of motor units 
B)  increased frequency of muscle action potentials 
C)  recruitment of more fast glycolytic muscle fibers 
D)  All of the choices are correct. 
A)  increased recruitment of motor units 
B)  increased frequency of muscle action potentials 
C)  recruitment of more fast glycolytic muscle fibers 
D)  All of the choices are correct.

Question 20

Which type(s) of muscle contraction can be regulated by acetylcholine?

Accepted Answer

A)  cardiac and skeletal 
B)  cardiac, skeletal and smooth 
C)  skeletal and smooth 
D)  skeletal only 
A)  cardiac and skeletal 
B)  cardiac, skeletal and smooth 
C)  skeletal and smooth 
D)  skeletal only

Exam 11: Muscle

During a concentric muscle contraction, _______ moves along _______ toward the M line.

Glycolysis results in the breakdown of glucose into

Which process requires sufficient oxygen to occur?

Another name for single-unit smooth muscle is ______ smooth muscle

A whole muscle is controlled by activation of a single motor unit.

During an isotonic muscle contraction, what happens to the H zone?

Marathon runners often complete their events between 4 and 5 hours. Throughout the majority of this endurance event, which process is producing ATP?

Sarcomeres are present in which type(s) of muscle?

At low concentrations, the plant alkaloid ryanodine locks ryanodine receptors into a half open state, allowing Ca2+ to flow. How will the actions of ryanodine compare between skeletal and cardiac muscle?

Which of the following muscle functions can explain why your head falls down when you begin to fall asleep during class?

After eating some questionable taco meat, your friend Joshua begins to throw up those risky tacos he ate only a few hours before. Which muscle function best explains why this might have occurred?

Larry is stretching out his leg muscles before going for a run. Which property of muscle allows Larry to do this without hurting himself?

Which type(s) of muscle cells contribute to homeostasis?

Which type(s) of muscle contraction can be regulated by norepinephrine?

Which molecule can be used to quickly regenerate ATP by a direct phosphorylation reaction?

A somatic motor neuron releases _____ onto skeletal muscle to cause it to contract.

Which type(s) of muscle fibers has/have the most creatine phosphate?

Jimothy is out cutting firewood with his dad and when they finish they need to carry it back to their campsite. Jimothy wants to impress his dad with how much would he can carry. What would be the most efficient way for him to carry the most wood while using the least amount of energy?

Which of the following would increase the tension produced by a skeletal muscle contraction?

Which type(s) of muscle contraction can be regulated by acetylcholine?

An Introduction to Physiology

Chemical Composition of the Body

Cells

Metabolism

Transport Across the Plasma Membrane

Cell Signaling

The Nervous System and Neuronal Excitability

The Central Nervous System

Sensory Systems

Autonomic and Somatic Nervous Systems

Control of Body Movement

The Endocrine System

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Hemodynamics

The Cardiovascular System: the Blood

The Immune System

The Respiratory System

The Urinary System

Fluid, Electrolyte, and Acidbase Homeostasis

The Digestive System

Metabolic Adaptations, Energy Balance, and Temperature Regulation

The Reproductive Systems

Filters

During a concentric muscle contraction, _ moves along _ toward the M line.

At low concentrations, the plant alkaloid ryanodine locks ryanodine receptors into a half open state, allowing Ca²⁺ to flow. How will the actions of ryanodine compare between skeletal and cardiac muscle?