BIOL 251 HUMAN ANATOMY AND
PHYSIOLOGY EXAM WITH VERIFIED
QUESTIONS AND ANSWERS|| GUARANTEED
PASS|| ALREADY GRADED A+ || LATEST
VERSION 2025
Immunoglobulins that are primarily found in glandular secretions such as saliva
and tears are
A) IgM.
B) IgE.
C) IgG.
D) IgD.
E) IgA. - ANSWER-E) IgA
The role of antigen-presenting cells in immunity is to
A) process antigens.
B) display antigen fragments.
C) activate T cells.
D) produce antibodies.
E) A, B, and C - ANSWER-B) display antigen fragments
When an antigen is bound to a Class I MHC molecule, it can stimulate a
________ cell.
A) cytotoxic T
,B) NK
C) B
D) plasma
E) helper T - ANSWER-A) cytotoxic T
Class II MHC molecules are found only on which of the following?
A) all body cells with a nucleus
B) lymphocytes and antigen-presenting cells
C) granulocytes and microphages
D) liver cells and macrophages in the spleen
E) red blood cells - ANSWER-D) liver cells and macrophages in the spleen
When an antigen is bound to a Class II MHC protein, it can activate a ________
cell.
A) helper T
B) NK C) cytotoxic T
D) suppressor T
E) plasma - ANSWER-A) helper T cell
B cells are primarily activated by the activities of
A) helper T cells.
B) macrophages.
C) antibodies.
D) antigens.
E) plasma cells. - ANSWER-D) antigens
Helper T cells do all of the following, except
A) provide a rapid response to a future exposure to the antigen.
,B) enhance nonspecific defenses.
C) trigger B-cell division, plasma cell maturation, and antibody production.
D) enhance production of memory and cytotoxic T cells.
E) attract and stimulate the activity of NK cells. - ANSWER-?
In response to hemorrhage, there is
A) peripheral vasoconstriction.
B) ncreased parasympathetic stimulation of the heart.
C) mobilization of the venous reserve.
D) all of the above
E) A and C only - ANSWER-E) A and C only
The hormone that produces cardiovascular effects similar to activation of the
sympathetic nervous system is:
A) epinephrine.
B) acetylcholine.
C) bradykinin.
D) achykinin.
E) sympathetic neuropeptide. - ANSWER-A) epinephrine
Homeostatic mechanisms in response to blood loss include all of the following,
except
A) inhibition of EPO secretion.
B) uptake of interstitial fluid due to reduced capillary pressure.
C) increased thirst and water intake.
D) activation of aldosterone secretion.
E) activation of ADH secretion. - ANSWER-A) inhibition of EPO secretion
, Elderly individuals are more prone than are younger individuals to have all of
the following, except
A) hypertension.
B) increased elasticity of vessel walls.
C) venous thrombosis.
D) arteriosclerosis.
E) problems with the conducting system of the heart. - ANSWER-B) increased
elasticity of vessel walls
Which of the following factors will increase the net filtration pressure to move
fluid out of capillaries?
A) decreased plasma albumen
B) increased blood hydrostatic pressure
C) increased tissue hydrostatic pressure
D) both A and B
E) A, B, and C - ANSWER-E) A, B, and C
The main control of peripheral resistance occurs in the
A) artery.
B) venule.
C) arteriole.
D) vein.
E) capillary. - ANSWER-C) arteriole
The vascular pressure that declines from roughly 35 mm Hg to about 18 mm Hg
is the
A) diastolic pressure.
B) peripheral pressure.
C) pulse pressure.
PHYSIOLOGY EXAM WITH VERIFIED
QUESTIONS AND ANSWERS|| GUARANTEED
PASS|| ALREADY GRADED A+ || LATEST
VERSION 2025
Immunoglobulins that are primarily found in glandular secretions such as saliva
and tears are
A) IgM.
B) IgE.
C) IgG.
D) IgD.
E) IgA. - ANSWER-E) IgA
The role of antigen-presenting cells in immunity is to
A) process antigens.
B) display antigen fragments.
C) activate T cells.
D) produce antibodies.
E) A, B, and C - ANSWER-B) display antigen fragments
When an antigen is bound to a Class I MHC molecule, it can stimulate a
________ cell.
A) cytotoxic T
,B) NK
C) B
D) plasma
E) helper T - ANSWER-A) cytotoxic T
Class II MHC molecules are found only on which of the following?
A) all body cells with a nucleus
B) lymphocytes and antigen-presenting cells
C) granulocytes and microphages
D) liver cells and macrophages in the spleen
E) red blood cells - ANSWER-D) liver cells and macrophages in the spleen
When an antigen is bound to a Class II MHC protein, it can activate a ________
cell.
A) helper T
B) NK C) cytotoxic T
D) suppressor T
E) plasma - ANSWER-A) helper T cell
B cells are primarily activated by the activities of
A) helper T cells.
B) macrophages.
C) antibodies.
D) antigens.
E) plasma cells. - ANSWER-D) antigens
Helper T cells do all of the following, except
A) provide a rapid response to a future exposure to the antigen.
,B) enhance nonspecific defenses.
C) trigger B-cell division, plasma cell maturation, and antibody production.
D) enhance production of memory and cytotoxic T cells.
E) attract and stimulate the activity of NK cells. - ANSWER-?
In response to hemorrhage, there is
A) peripheral vasoconstriction.
B) ncreased parasympathetic stimulation of the heart.
C) mobilization of the venous reserve.
D) all of the above
E) A and C only - ANSWER-E) A and C only
The hormone that produces cardiovascular effects similar to activation of the
sympathetic nervous system is:
A) epinephrine.
B) acetylcholine.
C) bradykinin.
D) achykinin.
E) sympathetic neuropeptide. - ANSWER-A) epinephrine
Homeostatic mechanisms in response to blood loss include all of the following,
except
A) inhibition of EPO secretion.
B) uptake of interstitial fluid due to reduced capillary pressure.
C) increased thirst and water intake.
D) activation of aldosterone secretion.
E) activation of ADH secretion. - ANSWER-A) inhibition of EPO secretion
, Elderly individuals are more prone than are younger individuals to have all of
the following, except
A) hypertension.
B) increased elasticity of vessel walls.
C) venous thrombosis.
D) arteriosclerosis.
E) problems with the conducting system of the heart. - ANSWER-B) increased
elasticity of vessel walls
Which of the following factors will increase the net filtration pressure to move
fluid out of capillaries?
A) decreased plasma albumen
B) increased blood hydrostatic pressure
C) increased tissue hydrostatic pressure
D) both A and B
E) A, B, and C - ANSWER-E) A, B, and C
The main control of peripheral resistance occurs in the
A) artery.
B) venule.
C) arteriole.
D) vein.
E) capillary. - ANSWER-C) arteriole
The vascular pressure that declines from roughly 35 mm Hg to about 18 mm Hg
is the
A) diastolic pressure.
B) peripheral pressure.
C) pulse pressure.
