Question 1

Match each definition in the first column to the correct term in the second column.
-Functions in the attachment of muscle to bone.

Accepted Answer

A) Lactic acid 
B) Transverse tubules 
C) Tendons 
D) Muscle twitch 
E) Fast twitch muscle fibers
F)Tropomyosin
G)Myosin
H)Troponin
I)Slow twitch muscle fibers
J)Calcium ions
K)Actin 
A) Lactic acid 
B) Transverse tubules 
C) Tendons 
D) Muscle twitch 
E) Fast twitch muscle fibers
F)Tropomyosin
G)Myosin
H)Troponin
I)Slow twitch muscle fibers
J)Calcium ions
K)Actin

Question 2

Match each definition in the first column to the correct term in the second column.
-Causes soreness in muscles when the muscles are used more often than usual.

Accepted Answer

A) Lactic acid 
B) Transverse tubules 
C) Tendons 
D) Muscle twitch 
E) Fast twitch muscle fibers
F)Tropomyosin
G)Myosin
H)Troponin
I)Slow twitch muscle fibers
J)Calcium ions
K)Actin 
A) Lactic acid 
B) Transverse tubules 
C) Tendons 
D) Muscle twitch 
E) Fast twitch muscle fibers
F)Tropomyosin
G)Myosin
H)Troponin
I)Slow twitch muscle fibers
J)Calcium ions
K)Actin

Question 3

Explain the function of ATP in muscle contractions.

Accepted Answer

ATP binds to the myosin heads,allowing t

Question 4

Which of the following are protein filaments that function in muscle contraction and are shaped like a golf club with two heads?

Accepted Answer

A) intermediate filaments 
B) myosin filaments 
C) myofilaments 
D) actin filaments 
A) intermediate filaments 
B) myosin filaments 
C) myofilaments 
D) actin filaments

Question 5

Muscle contraction results from the repeated cycle of interactions between myosin and actin.What is the last step of this cycle after which the cycle starts over again?

Accepted Answer

A) New ATP molecules bind to the myosin heads, causing them to disengage from the actin. 
B) The myosin heads split the ATP into ADP and Pi and store the energy. 
C) The myosin head bends (the power stroke). 
D) Myosin heads extend toward the Z lines at the ends of the sarcomere. 
A) New ATP molecules bind to the myosin heads, causing them to disengage from the actin. 
B) The myosin heads split the ATP into ADP and Pi and store the energy. 
C) The myosin head bends (the power stroke). 
D) Myosin heads extend toward the Z lines at the ends of the sarcomere.

Question 6

Match each definition in the first column to the correct term in the second column.
-Delivers the signals from the motor neuron to every sarcomere of the muscle cell.

Accepted Answer

A) Lactic acid 
B) Transverse tubules 
C) Tendons 
D) Muscle twitch 
E) Fast twitch muscle fibers
F)Tropomyosin
G)Myosin
H)Troponin
I)Slow twitch muscle fibers
J)Calcium ions
K)Actin 
A) Lactic acid 
B) Transverse tubules 
C) Tendons 
D) Muscle twitch 
E) Fast twitch muscle fibers
F)Tropomyosin
G)Myosin
H)Troponin
I)Slow twitch muscle fibers
J)Calcium ions
K)Actin

Question 7

What is released by motor neurons to stimulate a contraction?

Accepted Answer

A) myosin 
B) acetylcholine 
C) dopamine 
D) calcium 
A) myosin 
B) acetylcholine 
C) dopamine 
D) calcium

Question 8

The sarcoplasmic reticulum stores ions that are necessary for skeletal muscle contractions.Which of the following ions does it store?

Accepted Answer

A) Mg++ 
B) Fe++ 
C) Na+ 
D) Ca++ 
A) Mg++ 
B) Fe++ 
C) Na+ 
D) Ca++

Question 9

A muscle will ________ if levels of calcium and potassium decrease in the blood.

Accepted Answer

The answer of A muscle will ________ if levels of...

Question 10

Which of the following is not a function of muscle?

Accepted Answer

A) regulate calcium in the blood 
B) generate heat 
C) move blood in veins 
D) move lymph in lymphatic vessels 
A) regulate calcium in the blood 
B) generate heat 
C) move blood in veins 
D) move lymph in lymphatic vessels

Question 11

If it were possible to have antagonistic muscle pairs in an arm contract simultaneously,what movement would the arm make?

Accepted Answer

A) The arm would move away from the body. 
B) The arm would move toward the body in a curling movement. 
C) The arm would be locked in position. 
D) The arm could move easily in each direction. 
A) The arm would move away from the body. 
B) The arm would move toward the body in a curling movement. 
C) The arm would be locked in position. 
D) The arm could move easily in each direction.

Question 12

Muscle cells that contract slowly when stimulated but with enormous endurance are called ________.

Accepted Answer

The answer of Muscle cells that contract slowly when stimulated...

Question 13

A bundle of muscle cells is called a ________.

Accepted Answer

The answer of A bundle of muscle cells is called...

Question 14

What causes delayed onset muscle soreness?

Accepted Answer

A) exercise in which a muscle lengthens while it contracts 
B) walking on level ground 
C) running on level ground 
D) gentle stretching 
A) exercise in which a muscle lengthens while it contracts 
B) walking on level ground 
C) running on level ground 
D) gentle stretching

Question 15

Steve decides to make a meal for some of his friends.He uses a variety of foods to prepare the meal,including some canned mushrooms.Unfortunately,he gave his friends a mild case of botulism food poisoning.His friends reported blurred vision and trouble speaking due to a flaccid paralysis of the muscle cells by the botulinum toxin.Propose a mechanism by which this toxin would inhibit muscle contraction.

Accepted Answer

If the muscles become flaccid,it's becau

Question 16

The ________ are the thinner of the two protein filaments that are found within myofibrils.

Accepted Answer

The answer of The ________ are the thinner of the...

Question 17

Why does a person continue to breathe heavily after prolonged activity?

Accepted Answer

A) because of a lack of water 
B) to relieve fatigue 
C) to relieve O₂ debt 
D) no reason 
A) because of a lack of water 
B) to relieve fatigue 
C) to relieve O₂ debt 
D) no reason

Question 18

Compare and contrast the physiological effects of steroid use to increase and improve performance in both genders.

Accepted Answer

Steroid use may promote a false sense of

Question 19

Myasthenia gravis is a disease caused by the immune system that attacks the acetylcholine receptors found on muscle cells.What effect would blocking these receptors have on muscle contraction?

Accepted Answer

Acetylcholine is needed to initiate an a

Question 20

________ are the proteins that appear as dark bands that mark the ends of the sarcomeres.

Accepted Answer

The answer of ________ are the proteins that appear as...

Exam 6: The Muscular System

Match each definition in the first column to the correct term in the second column. -Functions in the attachment of muscle to bone.

Match each definition in the first column to the correct term in the second column. -Causes soreness in muscles when the muscles are used more often than usual.

Explain the function of ATP in muscle contractions.

Which of the following are protein filaments that function in muscle contraction and are shaped like a golf club with two heads?

Muscle contraction results from the repeated cycle of interactions between myosin and actin.What is the last step of this cycle after which the cycle starts over again?

Match each definition in the first column to the correct term in the second column. -Delivers the signals from the motor neuron to every sarcomere of the muscle cell.

What is released by motor neurons to stimulate a contraction?

The sarcoplasmic reticulum stores ions that are necessary for skeletal muscle contractions.Which of the following ions does it store?

A muscle will ________ if levels of calcium and potassium decrease in the blood.

Which of the following is not a function of muscle?

If it were possible to have antagonistic muscle pairs in an arm contract simultaneously,what movement would the arm make?

Muscle cells that contract slowly when stimulated but with enormous endurance are called ________.

A bundle of muscle cells is called a ________.

What causes delayed onset muscle soreness?

The ________ are the thinner of the two protein filaments that are found within myofibrils.

Why does a person continue to breathe heavily after prolonged activity?

Compare and contrast the physiological effects of steroid use to increase and improve performance in both genders.

Myasthenia gravis is a disease caused by the immune system that attacks the acetylcholine receptors found on muscle cells.What effect would blocking these receptors have on muscle contraction?

________ are the proteins that appear as dark bands that mark the ends of the sarcomeres.

Humans in the World of Biology

Chemistry Comes to Life

The Cell

Body Organization and Homeostasis

The Skeletal System

Neurons: the Matter of the Mind

The Nervous System

Sensory Systems

The Endocrine System

Blood

The Cardiovascular and Lymphatic Systems

Body Defense Mechanisms

The Respiratory System

The Digestive System

The Urinary System

Reproductive Systems

Development Throughout Life

Chromosomes and Cell Division

Genetics and Human Inheritance

Dna and Biotechnology

Evolution and Our Heritage

Ecology, the Environment, and Us

Human Populations, limited Resources, and Pollution

Food Safety and Defense

Drugs and the Mind

Diabetes Mellitus

a Cardiovascular Disease

a Special Topic: Infectious Disease

a Nutrition and Weight Control

Sexually Transmitted Diseases and Aids

Autism Spectrum Disorders

Stem Cells a Repair Kit for the Body

Cancer

Filters