Question 1

After death,muscles remain in a stiff position for several hours.This stiff position is called

Accepted Answer

A)  osteoarthritis.
B)  rheumatoid arthritis.
C)  rigor mortis.
D)  osteoporosis.
E)  flaccid paralysis.F) None of the above
G) C) and D)

Question 2

How did the inactivation of a gene that now encodes a nonfunctional myosin protein affect human chewing muscles?

Accepted Answer

A)  No effect because humans have over 40 closely related myosin genes.
B)  No effect because myosin is not essential for life.
C)  The loss of this myosin causes smaller and weaker chewing muscles in humans.
D)  No effect because other proteins in the body can do the same thing as myosin.
E)  The loss of this myosin causes greater flexibility of chewing muscles in humans.F) C) and D)
G) None of the above

Question 3

A muscle that allows you to turn your head to the left will not allow you to turn your head back to the center.

Accepted Answer

A) True 
 B)False

Question 4

Which will be true of the muscles of a bedridden person?

Accepted Answer

A)  Only calcium levels will be lower than normal.
B)  Mitochondrial enzyme activity will be lower than normal.
C)  Only ATP production will be lower than normal.
D)  Calcium levels and ATP production will be lower than normal.
E)  ATP production and mitochondrial enzyme activity will be lower than normal.F) B) and C)
G) D) and E)

Question 5

What causes a muscle cell to contract?

Accepted Answer

A)  Actin and myosin break down.
B)  Actin heads attached to myosin bend.
C)  Calcium ions form a bridge binding actin to myosin.
D)  ATP forms a bridge binding actin to myosin.
E)  Myosin heads attached to actin bend.F) A) and C)
G) B) and C)

Question 6

Without muscles,bones ______ and without bones,muscles ______.

Accepted Answer

A)  would remain in one location;would move soft tissue layers
B)  would remain in one location;would remain in one location
C)  would provide movement;would remain in one location
D)  would be useless;would remain under control of the nervous system
E)  would remain under control of the nervous system;would be uselessF) C) and D)
G) A) and D)

Question 7

What connective tissue provides a mold that bone replaces until bone growth is complete?

Accepted Answer

A)  cartilage
B)  red bone marrow
C)  yellow bone marrow
D)  compact bone
E)  spongy boneF) All of the above
G) C) and E)

Question 8

A thick filament in a muscle cell is composed primarily of the protein

Accepted Answer

A)  pectin.
B)  myoglobin.
C)  hemoglobin.
D)  actin.
E)  myosin.F) C) and D)
G) D) and E)

Question 9

______ keep(s) urine inside the bladder and ______ expel(s) urine from the bladder.

Accepted Answer

A)  Bone;muscles
B)  Tendons;ligaments
C)  Ligaments;tendons
D)  Cartilage;muscle
E)  Muscle;muscleF) A) and B)
G) All of the above

Question 10

If you were told while in medical school working on a cadaver to find a damaged tendon,you might first look for what two things joined together?

Accepted Answer

A)  muscle;bone
B)  ligaments;bone
C)  muscle;muscle
D)  bone;bone
E)  cartilage;boneF) A) and D)
G) All of the above

Exam 26: The Skeletal and Muscular Systems

Without muscles,bones and without bones,muscles .

Correct Answer
verified

How did the inactivation of a gene that now encodes a nonfunctional myosin protein affect human chewing muscles?

Correct Answer
verified

What connective tissue provides a mold that bone replaces until bone growth is complete?

Correct Answer
verified

A thick filament in a muscle cell is composed primarily of the protein

Correct Answer
verified

A muscle that allows you to turn your head to the left will not allow you to turn your head back to the center.

Correct Answer
verified

keep(s) urine inside the bladder and expel(s) urine from the bladder.

Correct Answer
verified

What causes a muscle cell to contract?

Correct Answer
verified

Which will be true of the muscles of a bedridden person?

Correct Answer
verified

If you were told while in medical school working on a cadaver to find a damaged tendon,you might first look for what two things joined together?

Correct Answer
verified

After death,muscles remain in a stiff position for several hours.This stiff position is called

Correct Answer
verified

Exam 26: The Skeletal and Muscular Systems

Without muscles,bones ______ and without bones,muscles ______.

Correct AnswerverifiedShow Answer

How did the inactivation of a gene that now encodes a nonfunctional myosin protein affect human chewing muscles?

Correct AnswerverifiedShow Answer

What connective tissue provides a mold that bone replaces until bone growth is complete?

Correct AnswerverifiedShow Answer

A thick filament in a muscle cell is composed primarily of the protein

Correct AnswerverifiedShow Answer

A muscle that allows you to turn your head to the left will not allow you to turn your head back to the center.

Correct AnswerverifiedShow Answer

______ keep(s) urine inside the bladder and ______ expel(s) urine from the bladder.

Correct AnswerverifiedShow Answer

What causes a muscle cell to contract?

Correct AnswerverifiedShow Answer

Which will be true of the muscles of a bedridden person?

Correct AnswerverifiedShow Answer

If you were told while in medical school working on a cadaver to find a damaged tendon,you might first look for what two things joined together?

Correct AnswerverifiedShow Answer

After death,muscles remain in a stiff position for several hours.This stiff position is called

Correct AnswerverifiedShow Answer

Without muscles,bones and without bones,muscles .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

keep(s) urine inside the bladder and expel(s) urine from the bladder.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified