Question 1

What are the correct steps of muscle contraction starting with ACh? 
A.ACh diffuses across the synaptic cleft
B.The sarcolemma generates an impulse that moves down the T tubules into the sarcoplasmic reticulum
C.ACh binds to receptors in the sarcolemma
D.The sarcomere contraction produces a myofibril contraction
E.Calcium is released causing the sarcomere contraction

Accepted Answer

A)  a - c - b - e - d
B)  a - b - c -e - d
C)  d - a - b - e - c
D)  c - e - d - a - bE) A) and D)
F) A) and C)

Question 2

In muscle innervation motor nerve fibers signal muscle movement from the region called the neuromuscular junction.

Accepted Answer

A) True 
 B)False

Question 3

According to the sliding filament theory of muscle contraction,

Accepted Answer

A)  actin binds ATP and breaks it apart as actin pulls against myosin.
B)  calcium ions are released from myosin as the filaments slide by.
C)  the thick and thin filaments do not change length during this process.
D)  an accordion-like pleat is formed as the myosin and actin interact.
E)  All of the choices are correct.F) A) and B)
G) A) and E) C

Question 4

Damage to the matrix of a bone can result in which of the following complications?

Accepted Answer

A)  There will be a decrease in calcium phosphate resulting in a decrease in calcium and phosphate ions.
B)  There will be a decrease in potassium resulting in a decrease in bone strength.
C)  There will be a decrease in the production of white blood cells.
D)  The attachment point for muscles will not be as strong resulting in more injuries.
E)  None of these are complications associated with damage to the matrix of the bone.F) A) and B)
G) A) and D)

Question 5

Which of the following statements about the vertebrae is NOT true?

Accepted Answer

A)  Twenty-six vertebrae make up the vertebral column.
B)  The vertebrae form a dorsal backbone.
C)  The vertebrae help form 4 curvatures of the spine.
D)  The vertebrae are separated by intervertebral disks.
E)  The vertebrae protect the spinal cord.F) A) and C)
G) B) and C)

Question 6

Which of the following statements about the development of bone in humans is NOT true?

Accepted Answer

A)  Bone breakdown and replacement occur throughout life.
B)  A primary ossification center forms in the middle of a long bone.
C)  A secondary ossification center forms at the end of a long bone.
D)  Bones may form within a cartilage model or within a membrane matrix.
E)  A cartilaginous disk remains between the primary and secondary ossification centers until old age.F) A) and D)
G) A) and E)

Question 7

The type of bone tissue that is found in the middle portion of a long bone and has lacunae arranged in concentric circles around central canals that contain blood vessels and nerves is

Accepted Answer

A)  spongy bone.
B)  compact bone.
C)  red marrow.
D)  yellow marrow.
E)  fibrous membrane.F) None of the above
G) A) and B)

Question 8

Which of the following statements about the skeleton of a clam is NOT true?

Accepted Answer

A)  The skeleton of a clam has two separate shells.
B)  The skeleton of a clam grows with the organism.
C)  The skeleton of a clam is made of calcium carbonate.
D)  The skeleton of a clam is used mainly to allow movement of the organism.
E)  The skeleton of a clam has muscles attached to it from the inside of the body.F) A) and D)
G) B) and E)

Question 9

What molecule is used to anaerobically regenerate ATP?

Accepted Answer

A)  ADP
B)  glucose
C)  lactate
D)  creatine phosphate
E)  tropomyosinF) A) and D)
G) A) and C)

Question 10

Which of the following statements about the muscular system is NOT true?

Accepted Answer

A)  The human muscular system contains three kinds of muscle tissue.
B)  Muscles work in antagonistic pairs across a joint.
C)  Muscles are attached to bones by tendons.
D)  Muscles can move a bone by pushing or pulling it as they contract.
E)  Tetanus and tone are features of normal muscle tissue.F) None of the above
G) C) and D)

Question 11

Which mammalian skeleton provides an advantage in an aquatic environment?

Accepted Answer

A)  A streamlined torpedo-shaped skeleton.
B)  A skeleton that has elongated legs and large flippers.
C)  A skeleton that allows for walking on the tips of their toes across the bottom of the ocean.
D)  All of the above provide an advantage in an aquatic environment.
E)  None of the above provide an advantage in an aquatic envrionment.F) A) and D)
G) All of the above

Question 12

The pectoral girdle is adapted for great strength,whereas the pelvic girdle is more adapted for flexibility.

Accepted Answer

A) True 
 B)False

Question 13

_____ provides the energy for muscle contraction.

Accepted Answer

A)  ATP
B)  ADP
C)  Creatine phosphate
D)  Lactate
E)  GlycogenF) B) and E)
G) C) and D)

Question 14

Which of the following functions is NOT a function of the human skeletal system?

Accepted Answer

A)  protects internal organs
B)  acts as a storage site for calcium and phosphorus ions
C)  acts as the site of blood cell production in adults
D)  acts as a structure against which muscles can contract
E)  provides the ATP for muscles to use in contractionF) None of the above
G) A) and E)

Question 15

Which feature of the mammalian skeleton provides an advantage for animals that are land based predators?

Accepted Answer

A)  Walking on their toes.
B)  Elongated hindlimbs that propel them forward.
C)  Bipedal locomotion on the soles of the feet.
D)  Long legs and running on the tips of elongated phalanges.
E)  All of these are advantages for land based predators.F) C) and E)
G) A) and B)

Question 16

Which one of the following structures is NOT a part of the appendicular skeleton?

Accepted Answer

A)  ribs
B)  fibula
C)  humerus
D)  coxal
E)  radiusF) A) and C)
G) B) and E)

Question 17

Which of the following structures attaches muscle to the bone?

Accepted Answer

A)  ligaments
B)  joints
C)  tendons
D)  adipose tissue
E)  sarcomereF) B) and C)
G) C) and E) C

Question 18

Which of the following is not an advantage of having an endoskeleton?

Accepted Answer

A)  The skeleton grows with the animal.
B)  Endoskeletons can support the weight of a large animal.
C)  Endoskeleton provides protection to the internal organs.
D)  Endoskeletons allow for more flexibility.
E)  It provides protection for the outermost tissue layer of the organism.F) A) and C)
G) A) and D)

Question 19

In crowded Asian regions such as Hong Kong,there is not enough room for cemeteries.However,the dead can be temporarily buried and their bones can later be exhumed and stored in an ossarium,a wall made of small concrete boxes (about eight inches by eight inches by two feet long) just large enough to contain all the human bones.These dimensions are defined by the __________ which is the longest bone and the ________ which is the bone with the largest volume in the human body.

Accepted Answer

A)  humerus; vertebrae
B)  femur; skull
C)  vertebrae; pelvis
D)  radius; scapula
E)  clavicle; metatarsalsF) A) and B)
G) A) and C)

Question 20

Which of the following bones is (are) NOT part of the axial skeleton?

Accepted Answer

A)  ribs
B)  skull
C)  sternum
D)  scapula
E)  vertebraeF) A) and E)
G) B) and C) D

Exam 39: Locomotion and Support Systems

Correct Answer
verified

In muscle innervation motor nerve fibers signal muscle movement from the region called the neuromuscular junction.

Correct Answer
verified

According to the sliding filament theory of muscle contraction,

Correct Answer
verified
C

Damage to the matrix of a bone can result in which of the following complications?

Correct Answer
verified

Which of the following statements about the vertebrae is NOT true?

Correct Answer
verified

Which of the following statements about the development of bone in humans is NOT true?

Correct Answer
verified

The type of bone tissue that is found in the middle portion of a long bone and has lacunae arranged in concentric circles around central canals that contain blood vessels and nerves is

Correct Answer
verified

Which of the following statements about the skeleton of a clam is NOT true?

Correct Answer
verified

What molecule is used to anaerobically regenerate ATP?

Correct Answer
verified

Which of the following statements about the muscular system is NOT true?

Correct Answer
verified

Which mammalian skeleton provides an advantage in an aquatic environment?

Correct Answer
verified

The pectoral girdle is adapted for great strength,whereas the pelvic girdle is more adapted for flexibility.

Correct Answer
verified

_____ provides the energy for muscle contraction.

Correct Answer
verified

Which of the following functions is NOT a function of the human skeletal system?

Correct Answer
verified

Which feature of the mammalian skeleton provides an advantage for animals that are land based predators?

Correct Answer
verified

Which one of the following structures is NOT a part of the appendicular skeleton?

Correct Answer
verified

Which of the following structures attaches muscle to the bone?

Correct Answer
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C

Which of the following is not an advantage of having an endoskeleton?

Correct Answer
verified

Correct Answer
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Which of the following bones is (are) NOT part of the axial skeleton?

Correct Answer
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D

Exam 39: Locomotion and Support Systems

Correct AnswerverifiedShow Answer

In muscle innervation motor nerve fibers signal muscle movement from the region called the neuromuscular junction.

Correct AnswerverifiedShow Answer

According to the sliding filament theory of muscle contraction,

Correct AnswerverifiedC

Damage to the matrix of a bone can result in which of the following complications?

Correct AnswerverifiedShow Answer

Which of the following statements about the vertebrae is NOT true?

Correct AnswerverifiedShow Answer

Which of the following statements about the development of bone in humans is NOT true?

Correct AnswerverifiedShow Answer

The type of bone tissue that is found in the middle portion of a long bone and has lacunae arranged in concentric circles around central canals that contain blood vessels and nerves is

Correct AnswerverifiedShow Answer

Which of the following statements about the skeleton of a clam is NOT true?

Correct AnswerverifiedShow Answer

What molecule is used to anaerobically regenerate ATP?

Correct AnswerverifiedShow Answer

Which of the following statements about the muscular system is NOT true?

Correct AnswerverifiedShow Answer

Which mammalian skeleton provides an advantage in an aquatic environment?

Correct AnswerverifiedShow Answer

The pectoral girdle is adapted for great strength,whereas the pelvic girdle is more adapted for flexibility.

Correct AnswerverifiedShow Answer

_____ provides the energy for muscle contraction.

Correct AnswerverifiedShow Answer

Which of the following functions is NOT a function of the human skeletal system?

Correct AnswerverifiedShow Answer

Which feature of the mammalian skeleton provides an advantage for animals that are land based predators?

Correct AnswerverifiedShow Answer

Which one of the following structures is NOT a part of the appendicular skeleton?

Correct AnswerverifiedShow Answer

Which of the following structures attaches muscle to the bone?

Correct AnswerverifiedC

Which of the following is not an advantage of having an endoskeleton?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following bones is (are) NOT part of the axial skeleton?

Correct AnswerverifiedD

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C

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C

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D