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A&P test 2 > a&p test 2 questions > Flashcards

a&p test 2 questions Flashcards

1
Q

A fibrous joint that is a peg-in-socket is called a

A

gomphosis joint

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2
Q

In the classification of joints, which of the following is true?

A

All synovial joints are freely movable.

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3
Q

Bending of the tip of the finger exhibits flexion.

A

True

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4
Q

Which of the following is an abnormal lateral curvature of the vertebral column often seen in the thoracic region?

A

scoliosis

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5
Q

Which structure allows the diaphysis of the bone to increase in length until early childhood?

A

epiphyseal plate

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6
Q

Connective tissue sacs lined with synovial membranes that act as cushions in places where friction develops are called

A

Bursae

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7
Q

What structure in skeletal muscle cells functions in calcium storage?

A

sarcoplasmic reticulum

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8
Q

Myoglobin

A

stores oxygen in muscle cells

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9
Q

The frontal bone articulates with the parietal bone by means of the sagittal suture.

A

False

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10
Q

Which of the following are cartilaginous joints?

A

Synchondroses

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11
Q

The canal that runs through the core of each osteon (the Haversian canal) is the site of

A

blood vessels and nerve fibers

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12
Q

Which of the following is the abnormal curve often seen in pregnant women as they attempt to preserve their center of gravity toward the end of the pregnancy?

A

Lordosis

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13
Q

What produces the striations of a skeletal muscle cell?

A

the arrangement of myofilaments

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14
Q

A motor neuron and all the muscle cells that it stimulates are referred to as a motor end plate.

A

False

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15
Q

The cell responsible for secreting the matrix of bone is the

A

Osteoblasts

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16
Q

In an isotonic contraction, the muscle

A

changes in length and moves the “load”

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17
Q

The contractile units of skeletal muscles are

A

myofibrils

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18
Q

Cranial bones develop

A

within fibrous membranes

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19
Q

Which of the following is not a movement that can occur between vertebrae?

A

Supination

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20
Q

What is moving a limb away from the median plane of the body along the frontal plane called?

A

Abduction

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21
Q

Each consecutive bone lamella has collagen fibers that wrap in alternating directions.

A

True

22
Q

Bones are classified by whether they are weight bearing or protective in function.

A

False

23
Q

What is the functional unit of a skeletal muscle called?

A

Sarcomere

24
Q

Articular cartilage found at the ends of the long bones serves to

A

provide a smooth surface at the ends of synovial joints

25
Q

Muscle tone is the small amount of tautness or tension in the muscle due to weak, involuntary contractions of its motor units.

A

True

26
Q

Articulations permitting only slight degrees of movement are

A

amphiarthroses

27
Q

Although all skeletal muscles have different shapes, the fascicle arrangement of each muscle is exactly the same.

A

False

28
Q

In symphysis joints the articular surfaces of the bones are covered with

A

hyaline cartilage

29
Q

Muscle tone is the small amount of tautness or tension in the muscle due to weak, involuntary contractions of its motor units.

A

True

30
Q

What structure in skeletal muscle cells functions in calcium storage?

A

sarcoplasmic reticulum

31
Q

The structural unit of spongy is called

A

trabeculae

32
Q

A contraction in which the muscle does not shorten but its tension increases is called isometric contraction.

A

True

33
Q

When a muscle fiber contracts, the I bands diminish in size, the H zones disappear, and the A bands do not diminish in length

A

True

34
Q

Synarthrotic joints

A

permit essentially no movement

35
Q

Which of the following is not a connective tissue sheath that wraps individual muscle fibers?

A

aponeurosis

36
Q

The oxygen-binding protein found in muscle cells is

A

myoglobin

37
Q

The suture that connects the two parietal bones together is the

A

sagittal

38
Q

During muscle contraction, myosin cross bridges attach to which active sites?

A

actin filaments

39
Q

Which of the following bone tissues is adapted to support weight and withstand tension stress?

A

Compact Bone

40
Q

The structural unit of compact bone (osteon) resembles the growth rings of a tree trunk

A

True

41
Q

Which of these is not a way of classifying muscles?

A

the type of muscle fibers

42
Q

What kind of tissue is the forerunner of long bones in the embryo?

A

hyaline cartilage

43
Q

The process of bones increasing in width is known as

A

appositional growth

44
Q

What is the role of calcium ions in muscle contraction?

A

bind to regulatory sites on troponin to remove contraction inhibition

45
Q

An osteon contains osteocytes, lamellae, and a central canal, and is found in compact bone only.

A

True

46
Q

A fracture in the shaft of a bone would be a break in the

A

diaphysis

47
Q

Which of the following surrounds the individual muscle cell?

A

endomysium

48
Q

Muscles are only able to pull, they never push

A

True

49
Q

Bones are constantly undergoing resorption for various reasons. Which of the following cells accomplishes this process?

A

osteoclast

50
Q

The term aponeurosis refers to

A

a sheetlike indirect attachment to a skeletal element

51
Q

The reason that intervertebral discs exhibit a large amount of tensile strength, which allows them to absorb shock, is because they possess

A

collagen fibers

52
Q

What is the functional role of the T tubules?

A

enhance cellular communication during muscle contraction

A&P test 2 (4 decks)

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