Chapter 2 Quiz

Question 1

What is the functional unit of the nervous system?
Select one:
a. Vein
b. Neuron 
c. Tendon
d. Cartilage

Answer 1

b. Neuron

Question 2

Which systems accomplish human movement through their functional integration?
Select one:
a. Digestive, endocrine, and renal systems
b. Muscular, nervous, and skeletal systems
c. Cardiac, respiratory, and lymphatic systems
d. Integumentary, exocrine, and circulatory systems

Answer 2

b. Muscular, nervous, and skeletal systems

Question 3

According to sliding filament theory, when does muscular contracting occur?
Select one:
a. Actin and myosin filaments slide away from each other, lengthening the sarcomere.
b. Myofibrils are lengthened.
c. Actin and myosin filiments slide past each other, shortening the entire sarcomere.
d. The distance from Z line to Z line is increased.

Answer 3

c. Actin and myosin filiments slide past each other, shortening the entire sarcomere.

Question 4

Which of the following is a characteristic of muscle spindles?
Select one:
a. They transmit nerve impulses from one neuron to another.
b. They are sensitive to change in length of muscle and the rate of that change.
c. They provide the ability to sense the relative position of adjacent parts of the body.
d. They are slow twitch, “red” muscle fibers with a high degree of mitochondria.

Answer 4

b. They are sensitive to change in length of muscle and the rate of that change

Question 5

What are sensitive to changes in tension and the rate of that change, protecting a muscle from possible injury?
Select one:
a. Osteoclasts
b. Golgi tendon organs 
c. Efferent neurons
d. Muscle spindles

Answer 5

b. Golgi tendon organs

Question 6

Which of the following is a characteristic of joint receptors in the human body?
Select one:
a. They relay information from the joint sites back to the brain via efferent neurons.
b. They are known as the “soma” and process information from dendrites.
c. They respond to pressure, acceleration, and deceleration of joints.
d. They are responsible for joint injuries resulting from extreme joint positions.

Answer 6

c. They respond to pressure, acceleration, and deceleration of joints.

Question 7

Which gland produces the hormones (epinephrine and norepinephrine) that help prepare the body for activity and for the fight or flight response?
Select one:
a. Pituitary
b. Apocrine
c. Thyroid
d. Adrenal

Answer 7

d. Adrenal

Question 8

Which term refers to a system of glands that secrete hormones into the bloodstream to regulate a variety of bodily functions and consists of host organs, chemical messengers, and target cells?
Select one:
a. Endocrine system
b. Respiratory system
c. Digestive system
d. Nervous system

Answer 8

a. Endocrine system

Question 9

Which of the following glands releases growth hormone during childhood up until puberty?
Select one:
a. Pituitary gland 
b. Thyroid gland
c. Adrenal gland
d. Holocrine gland

Answer 9

a. Pituitary gland

Question 10

What is produced primarily in the ovaries in the female and in small amounts in the adrenal glands in males?
Select one:
a. Cortisol
b. Testosterone
c. Estrogen
d. Epinephrine

Answer 10

c. Estrogen

Question 11

Which of the following is made up of the upper and lower extremities as well as the shoulder and pelvic girdles and encompasses approximately 126 bones?
Select one:
a. Epiphyseal plate
b. Articular cartilage
c. Appendicular skeleton 
d. Vertebral column

Answer 11

c. Appendicular skeleton

Question 12

Which term refers to the motion of a joint?
Select one:
a. Excitation-contraction coupling
b. Wave summations
c. Force-velocity curves
d. Arthrokinematics

Answer 12

d. Arthrokinematics

Question 13

Which of the following characteristics distinguishes type II muscle fibers from type I muscle fibers?
Select one:
a. Contractions of a longer duration
b. Decreased oxygen delivery
c. More capillaries, mitochondria, and myoglobin
d. Smaller in size

Answer 13

b. Decreased oxygen delivery

Question 14

Which of the following is a characteristic of muscle spindles?
Select one:
a. They provide the ability to sense the relative position of adjacent parts of the body.
b. They are slow twitch, “red” muscle fibers with a high degree of mitochondria.
c. They transmit nerve impulses from one neuron to another.
d. They are sensitive to change in length of muscle and the rate of that change

Answer 14

d. They are sensitive to change in length of muscle and the rate of that change

Question 15

Which of the following is true of type I, or slow-twitch, muscle fibers?
Select one:
a. They are faster than type II muscle fibers to produce maximal tension.
b. They have a low oxidative capacity and fatigue quickly.
c. They are larger in size than type II muscle fibers and are referred to as white fibers.
d. They contain more capillaries, mitochondria, and myoglobin than type II muscle fibers.

Answer 15

d. They contain more capillaries, mitochondria, and myoglobin than type II muscle fibers.

Question 16

Which term refers to fibrous connective tissues that connect bone to bone and provide static and dynamic stability as well as input to the nervous system?
Select one:
a. Dendrites
b. Effectors
c. Ligaments
d. Tendons

Answer 16

c. Ligaments

Question 17

The body's ability to differentiate between walking on concrete and walking on sand is an example of which of the following functions of the nervous system?
Select one:
a. Sensory 
b. Integrative
c. Arthrokinematic
d. Motor

Answer 17

. Sensory

Question 18

Which of the following is a catabolic hormone secreted by the adrenal glands and serves to maintain energy supply through the breakdown of carbohydrates, fats, and protein?
Select one:
a. Testosterone
b. Cortisol 
c. Norepinephrine
d. Insulin

Answer 18

b. Cortisol

Question 19

Which of the following consists of a series of irregularly shaped bones divided into five different categories depending on where they are located in the backbone?
Select one:
a. Epiphyseal plate
b. Vertebral column
c. Medullar cavity
d. Articular cartilage

Answer 19

b. Vertebral column