Exam 3

Question 1

This organ stores developing T-cell lymphocytes until they are deployed to lymphatic tissues.
A) spleen
B) thyroid gland
C) thymus
D) bone marrow
E) AA

Answer 1

C) thymus

Question 2

Which of the following are functions of the lymphatic system?
A) fluid recovery
B) immunity
C) lipid absorption
D) 2A
E) AA

Answer 2

E) AA

Question 3

Memory T-cells are associated with
A) cell-mediated immunity
B) antibody mediated immunity
C) passive immunity
D) diplomatic immunity

Answer 3

A) cell-mediated immunity

Question 4

Non-specific body defenses include
A) epithelial and mucosal membraned
B) secretion of water, urea, and salts
C) fever and inflammation
D) 2A
E) AA

Answer 4

E) AA

Question 5

T and B lymphocytes
A) are polymorphonuclear
B) are involved with specific immune function
C) proliferate excessively in leukopenia
D) are most effective against parasitic worms
E) NA

Answer 5

B) are involved with specific immune function

Question 6

Which of the following are barriers to pathogen invasion?
A) skin and hair color
B) hydrochloric acid
C) sweat and salt and other secretions
D) 2A
E) AA

Answer 6

D) 2A

Question 7

Which of the following describes a neutrophil?
A) abundant, agranular, especially effective against cancer cells
B) abundant, granular, especially effective against bacteria
C) rare, agranular, releases antimicrobial defensins
D) rare, granular, contains multiple granules packed with histamine
E) NA

Answer 7

B) abundant, granular, especially effective against bacteria

Question 8

You are an intern performing medical rounds. You have a patient with a very high number of leukocytes and upon further examination, a complete red blood cell count (CBC) uncovers an unusual number of hemocytoblasts. What is (are) possible reasons for this disorder?
A) stroke
B) low erythrocytes
C) leukemia
D) polycythemia
E) osteoporosis

Answer 8

C) leukemia

Question 9

A fever results when lymphocytes release a substance called a \_\_ that resets the hypothalamic temperature set-point. 
A) cytokine
B) hormone
C) perforin
D) pyrogen
E) NA

Answer 9

D) pyrogen

Question 10

Which of the following cells is phagocytic?
A) plasma cell
B) macrophage
C) B cell
D) NK cell
E) AA

Answer 10

B) macrophage

Question 11

Artificial passive immunity is
A) derived from a vaccination
B) derived by exposure and recovery from a disease
C) derived by injection of antibodies or an anti-venom
D) AA
E) NA

Answer 11

C) derived by injection of antibodies or an anti-venom

Question 12

True or False. All lymphatic tissues and organs contain reticular connective tissue and resident lymphocytes

Answer 12

True

Question 13

This is the volume of air one uses while sleeping
A) tidal volume
B) residual volume
C) expiratory reserve volume
D) inspiratory reserve volume
E) AA

Answer 13

A) tidal volume

Question 14

If a person has been vaccinated, this is a form of \_\_ immunity and will last until the \_\_ cell dies.
A) natural, helper T-cell
B) induced, memory
C) natural, mast
D) induced, neuron
E) induced, plasma

Answer 14

B) induced, memory

Question 15

Which if the following make diffusion across a membrane so efficient?
A) the partial pressure gradients are enormous
B) gasses are lipid soluble
C) blood flow (perfusion) and air flow (ventilation) are coordinated
D) 2A
E) AA

Answer 15

E) AA

Question 16

The exchange portion (alveoli) of the respiratory tree is lined with __.
A) simple cuboidal epithelium
B) pseudostratified ciliated columnar epithelium and goblet cells
C) Type I and Type II alveolar cells
D) stratified squamous epithelium
E) dense connective tissue

Answer 16

C) Type I and Type II alveolar cells

Question 17

Normal ventilation that results in a neutral pH of the blood is called
A) hyperpnea
B) hyperventilation
C) acclimatization
D) apnea
E) eupnea

Answer 17

E) eupnea

Question 18

Type I and Type II alveolar cells are
A) connective tissue
B) epithelium
C) both secretory cells
D) a and b
E) b and c

Answer 18

B) epithelium

Question 19

Which of the following terms describes how hemoglobin changes shape during saturation with O2
A) alkaline altered
B) temperature modification
C) cooperative loading
D) 2A
E) AA

Answer 19

C) cooperative loading

Question 20

Gas flow through a bronchiole decreases as \_\_ increases.
A) pressure
B) resistance
C) airway diameter
D) 2A
E) AA

Answer 20

B) resistance

Question 21

To balance the red blood cells electrical gradient, as HCO3- flows into the cell, what ion flows out of the cell?
A) Fe++
B) Mg++
C) Cl-
D) Na+
E) Na

Answer 21

C) Cl-

Question 22

Carbon dioxide is carried in the blood plasma
A) as dissolved gas and carbonic acid (H2CO3)
B) as dissolved gas and bicarbonate (HCO3-)
C) bound to hemoglobin, as dissolved gas, and bicarbonate
D) as bicarbonate
E) dissolved in solution

Answer 22

B) as dissolved gas and bicarbonate (HCO3-)

Question 23

The central chemoreceptors directly respond to which of the following stimuli?
A) decreased oxygen levels in the cerebrospinal fluid (CSF)
B) increased hydrogen ion concentration in the CSF
C) increased carbon dioxide levels in the blood
D) b and c
E) AA

Answer 23

B) increased hydrogen ion concentration in the CSF

Question 24

The respiratory groups as a whole are responsible for
A) the basic inspiratory rhythm (pattern) of breathing
B) controlling the rate and the depth during speech and song
C) forced breathing during exercise
D) AA
E) NA

Answer 24

D) AA

Question 25

The peripheral chemoreceptors
A) are the aortic and carotid bodies
B) are very sensitive to changes in arterial blood pressures
C) are sensitive to changes in cerebrospinal fluid oxygen levels
D) a and b
E) NA

Answer 25

D) a and b