Chapter 1 & 2 Quiz

Question 1

A junction of two or more bones forming a joint is also known as

• a. an epiphysis
• b. a fossa
• c. an articulation
• d. a diaphysis

Answer 1

c. an articulation

Question 2

Which of the following terms does not appropriately fit with the other three?

a. notch
b. process
c. tubercle
d. tuberosity

Answer 2

a. notch

Question 3

The functional unit of skeletal muscle is known as a.

a myofibril

b. a sarcomere
c. the A-band
d. the I-band

Answer 3

b. a sarcomere

Question 4

The origin of a muscle is most likely defined as being located at the

a. distal end of a joint
b. distal end of a tendon
c. most stable bony attachment
d. most movable bony attachment

Answer 4

c. most stable bony attachment

Question 5

A series of sarcomeres linked together is known as

a. a myofibril
b. a muscle
c. actin
d. myosin

Answer 5

a. myofibril

Question 6

The release of which of the following substances causes the cross-bridges to move, which in turn causes a sarcomere to shorten?

a. actin

bmyosin

c. calcium
d. sarcoplasm

Answer 6

c. calcium

Question 7

A bundle of fibers within a muscle is wrapped in a fibrous sheath known as the

a. endomysium
b. epimysium
c. perimysium
d. sarcolemma

Answer 7

c. perimysium

Question 8

Joints with no observable movement are known as _______________________ joints.

Answer 8

suture

Question 9

A third-class lever places the resistance

a. between the axis and the force
b. outside of the force and the axis
c. on the opposite side of the axis as the force
d. on the axis

Answer 9

c. on the opposite side of the axis as the force

Question 10

Saclike structures that protect soft tissues as they pass over bony projections are known as _______________________.

Answer 10

bursa

Question 11

A motor unit is a motor neuron and all the _______________________ it supplies.

Answer 11

muscle fibers

Question 12

Dendrites conduct nerve impulses _______________________ a cell body.

Answer 12

toward

Question 13

Axons conduct nerve impulses _______________________ a cell body.

Answer 13

away from

Question 14

The term ____________________ refers to the contraction of cardiac muscle.

Answer 14

systole

Question 15

_______________ resists molecular rearrangement when a muscle contracts.

Answer 15

viscosity

Question 16

The most common type of lever found in the human body is the _______________ lever.

Answer 16

third class

Question 17

Which of the following movements is defined as movement in the frontal plane toward the midline of the body?

a. abduction
b. adduction
c. flexion
d. extension

Answer 17

a. adduction

Question 18

For movement of the shoulder joint to occur in the frontal plane, which of the following joint actions must take place?

a. internal rotation
b. circumduction
c. flexion
d. abduction

Answer 18

d. adduction

Question 19

A motion occurring in the horizontal (transverse) plane about a vertical axis is known as

a. abduction
b. rotation
c. adduction
d. extension

Answer 19

b. rotation

Question 20

Movement taking place in the frontal plane occurs about the

a. frontal horizontal axis
b. sagittal horizontal axis
c. vertical axis
d. horizontal axis

Answer 20

b. sagittal horzontal axis

Question 21

When the angle formed at a joint diminishes and the movement takes place in the sagittal plane, the movement is known as _______________________.

Answer 21

flexion

Question 22

Joint motion is typically described as taking place about an axis and within a _____________________.

Answer 22

plane

Question 23

An axis of the body that passes through the body horizontally from front to back is known as a _______________________ axis.

Answer 23

sagittal horizontal

Question 24

When referring to a structure of an extremity being closer to the trunk than another structure, we say that it is _______________________ to the other structure.

Answer 24

proximal