Question 1

Rheumatoid arthritis is caused when ______ become swollen and inflamed.

Accepted Answer

A)  ligaments
B)  cartilage
C)  bone
D)  joint membranes
E)  tendonsF) A) and D)
G) B) and D)

Question 2

What letter in the figure of a long bone corresponds to the location of hard,dense connective tissue with canals that house blood vessels and nervous tissue but that lacks enough space to store red bone marrow?

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  EF) A) and B)
G) B) and E)

Question 3

Which of the following 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) A) and C)
G) A) and B)

Question 4

Which of the following describes the role of myosin in muscle contraction?

Accepted Answer

A)  ATP forms a bridge binding actin to myosin.
B)  Actin heads bend when attached to myosin.
C)  Calcium ions form a bridge moving actin along myosin.
D)  Myosin heads bend when attached to actin.
E)  Myosin synthesizes new strands of actin,lengthening the musclE.F) C) and D)
G) A) and D)

Question 5

Connective tissue of the musculoskeletal system includes

Accepted Answer

A)  ligaments.
B)  bone.
C)  cartilage.
D)  tendons.
E)  All answers are correct.F) A) and C)
G) A) and E)

Question 6

In the section "Investigating Life: Did a Myosin Gene Mutation Make Humans Brainier?",how does an inactive gene that encodes a non-functional 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) All of the above
G) D) and E)

Question 7

If a growth plate is damaged before bone growth is complete,what may result?

Accepted Answer

A)  Additional cartilage will be added to the growth plate.
B)  The bone will not grow to its full length.
C)  The bone will continue to grow unchecked.
D)  The cartilage will continue to grow uncheckeD.
E)  Red bone marrow will not form because of a reduced marrow cavity.F) A) and B)
G) A) and C)

Question 8

What connective tissue provides a mold which 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) B) and E)
G) B) and D)

Question 9

An area where two bones meet is called a

Accepted Answer

A)  synapse.
B)  joint.
C)  synaptic cleft.
D)  vascular cavity.
E)  olfactory bulb.F) All of the above
G) A) and B)

Question 10

The type of skeleton that is an internal support structure is a(n)

Accepted Answer

A)  endoskeleton.
B)  hydrostatic skeleton.
C)  gastrovascular cavity.
D)  exoskeleton.
E)  vascular canal.F) D) and E)
G) B) and D)

Question 11

The endoskeleton functions in

Accepted Answer

A)  production of blood cells.
B)  supporting the body.
C)  protecting the body.
D)  movement.
E)  All answers are correct.F) C) and D)
G) All of the above

Question 12

Which of the following 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) C) and D)
G) B) and E)

Question 13

You are trying out for the USA World Cup soccer team.Everything is going well until you try to score a goal doing a bicycle kick and tear a connection between your quadriceps and femur.Now you will have to wait another four years.Which of the following could you have done to your leg?

Accepted Answer

A)  sprained a ligament
B)  strained a tendon
C)  strained a ligament
D)  sprained a tendonE) A) and B)
F) None of the above

Question 14

Ligaments connect bone to bone.

Accepted Answer

A) True 
 B)False

Question 15

In the section "Investigating Life: Did a Myosin Gene Mutation Make Humans Brainier?",the temporalis and masseter muscles close the jaw while the platysma opens the jaw.To clench your teeth,which of the following must occur?

Accepted Answer

A)  Contract the temporalis and masseter and relax the platysmA.
B)  Relax the temporalis and masseter and contract the platysma.
C)  Contract the temporalis,masseter,and platysma.
D)  Relax the temporalis,masseter,and platysma.
E)  Contract the temporalis and relax the platysma and masseter.F) A) and C)
G) All of the above

Question 16

The molecule that rapidly replenishes ATP at the beginning of muscle activity is

Accepted Answer

A)  actin.
B)  creatine phosphate.
C)  myoglobin.
D)  oxygen debt.
E)  myosin.F) C) and E)
G) C) and D)

Question 17

In muscle tissue,if there is not enough oxygen for aerobic respiration to occur,

Accepted Answer

A)  the muscle cell can produce ATP by fermentation.
B)  the muscle cell cannot make ATP.
C)  the muscle cell uses creatine phosphate instead of ATP for energy.
D)  the muscle cell can produce ATP from fats.
E)  the muscle cell depletes its reserves of lactic acid.F) A) and B)
G) A) and D)

Question 18

Each myofibril consists of two types of filaments,a thin actin filament and a thick myosin filament.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following is not a bone of the lower limbs?

Accepted Answer

A)  patella
B)  femur
C)  tibia
D)  fibula
E)  ulnaF) A) and E)
G) A) and C)

Question 20

When blood calcium is high which of the following would be stimulated by the thyroid?

Accepted Answer

A)  uptake of calcium from food by the intestine and secretion into the urine by the kidney
B)  uptake of calcium from food by the intestine and absorption from the urine by the kidney
C)  decreased uptake of calcium from food by the intestine and secretion into the urine by the kidney
D)  decreased uptake of calcium from food by the intestine and absorption from the urine by the kidneyE) B) and C)
F) A) and B)

Exam 26: The Skeletal and Muscular Systems

What letter in the figure of a long bone corresponds to the location of hard,dense connective tissue with canals that house blood vessels and nervous tissue but that lacks enough space to store red bone marrow?

Correct AnswerverifiedShow Answer

When blood calcium is high which of the following would be stimulated by the thyroid?

Correct AnswerverifiedShow Answer

The molecule that rapidly replenishes ATP at the beginning of muscle activity is

Correct AnswerverifiedShow Answer

The type of skeleton that is an internal support structure is a(n)

Correct AnswerverifiedShow Answer

An area where two bones meet is called a

Correct AnswerverifiedShow Answer

Ligaments connect bone to bone.

Correct AnswerverifiedShow Answer

Each myofibril consists of two types of filaments,a thin actin filament and a thick myosin filament.

Correct AnswerverifiedShow Answer

In the section "Investigating Life: Did a Myosin Gene Mutation Make Humans Brainier?",the temporalis and masseter muscles close the jaw while the platysma opens the jaw.To clench your teeth,which of the following must occur?

Correct AnswerverifiedShow Answer

Which of the following describes the role of myosin in muscle contraction?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Rheumatoid arthritis is caused when ______ become swollen and inflamed.

Correct AnswerverifiedShow Answer

You are trying out for the USA World Cup soccer team.Everything is going well until you try to score a goal doing a bicycle kick and tear a connection between your quadriceps and femur.Now you will have to wait another four years.Which of the following could you have done to your leg?

Correct AnswerverifiedShow Answer

Which of the following causes a muscle cell to contract?

Correct AnswerverifiedShow Answer

Connective tissue of the musculoskeletal system includes

Correct AnswerverifiedShow Answer

In the section "Investigating Life: Did a Myosin Gene Mutation Make Humans Brainier?",how does an inactive gene that encodes a non-functional myosin protein affect human chewing muscles?

Correct AnswerverifiedShow Answer

The endoskeleton functions in

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In muscle tissue,if there is not enough oxygen for aerobic respiration to occur,

Correct AnswerverifiedShow Answer

Which of the following is not a bone of the lower limbs?

Correct AnswerverifiedShow Answer

If a growth plate is damaged before bone growth is complete,what may result?

Correct AnswerverifiedShow Answer

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