Final Exam Questions 90-109

Question 1

the molecule that is made during transcription is:

Answer 1

messenger RNA (mRNA)

Question 2

the mechanical force of contraction is generated by:

Answer 2

a sliding of thin filaments past thick ones

Question 3

what is the atomic number of the atom:

Answer 3

6

Question 4

which one of the following is the action of the orbicularis oris:

Answer 4

closes, purses, and protrudes the lips

Question 5

the carotid artery is located in the:

Answer 5

neck

Question 6

the axon terminals of a nerve cells and the sarcolemma of a skeletal muscle cell join at the:

Answer 6

neuromuscular junction

Question 7

a physician estimates the volume of fluid lost in a severely burned patient by:

Answer 7

using the “rule of nines”

Question 8

the umbilical vein carries:

Answer 8

oxygen and nutrients from the placenta to the fetus

Question 9

which one of these effectors is NOT directly controlled by the autonomic nervous system:

Answer 9

skeletal muscle

Question 10

the most important minerals stored in bones are:

Answer 10

calcium and phosphorus

Question 11

the “tanning” effect (darkening of the skin) that occurs when a person is exposed to the sun is due to:

Answer 11

melanin

Question 12

the ability to respond to a stimulus is termed:

Answer 12

irritability

Question 13

the tailbone is the:

Answer 13

coccyx

Question 14

the lymphatic system:

Answer 14

picks up fluid leaked from blood vessels and returns it to the blood

Question 15

the aortic semilunar valve is composed of:

Answer 15

three cusps and opens when the left ventricle contracts

Question 16

the atlas is the:

Answer 16

first cervical vertebra

Question 17

a heart rate of over 100 beats per minute is called:

Answer 17

tachycardia

Question 18

which of the following homoeostatic imbalances is caused by skin exposure to chemicals:

Answer 18

contact dermtitis

Question 19

which of these characteristics best describes cardiac muscle tissue:

Answer 19

movement is involuntary and cells posses striations

Question 20

the pathways of vibrations through the ossicles from the tympanic membrane, or eardrum, to the oval window is:

Answer 20

malleus, incus, stapes