BIO 431 Exam Questions and
Answers 100% PASS
Function of hemoglobin - CORRECT ANSWER-Oxygen transport
How would hypoxia affect the production of erythropoietin? - CORRECT
ANSWER-would stimulate an increase in production in the kidneys
What type of antiserum will type AB + blood agglutinate with? (anti-A, anti-B,
anti-Rh) - CORRECT ANSWER-Anti-A, Anti-B, and Anti-Rh
Which layer of the blood vessel alters the diameter of the lumen? - CORRECT
ANSWER-Tunica Media
Which chamber of the heart first receives freshly oxygenated blood? - CORRECT
ANSWER-Left Atrium
Starling's law in the capillary shows us that - CORRECT ANSWER-fluid
movement is reabsorption at the venule end of the capillary.
Which blood vessels function in the exchange of gases and nutrients? - CORRECT
ANSWER-capillaries
,Which of the following is true?
A) Systolic BP contributes more to MAP because it is a larger number.
B) Diastolic BP contributes more to MAP because it is a larger number.
C) Diastolic BP contributes more to MAP because the heart is resting longer than
it is contracting. - CORRECT ANSWER-**C) Diastolic BP contributes more to
MAP because the heart is resting longer than it is contracting.
Which of the following describes the effect that an increase in ADH has on BP?
a) Increase in BP
b) decrease in BP
c) no change in BP - CORRECT ANSWER-a) increase in BP
Which of the following lists the two primary lymphatic organs?
A) Peyer's patches and lacteals
B) Thymus and tonsils
C) Tonsils and red bone marrow
D) Thymus and red bone marrow - CORRECT ANSWER-D) Thymus and red
bone marrow
Which of the following lists the leukocytes that are phagocytic?
A) Basophils, eosinophils, neutrophils
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
, B) Basophils, erythrocytes, neutrophils
C) Macrophages, erythrocytes, neutrophils
D) Macrophages, eosinophils, neutrophils - CORRECT ANSWER-D)
macrophages, eosinophils, and neutrophils
The site of gas exchange within the lungs are the - CORRECT ANSWER-alveoli
What effect does surfactant have on water? - CORRECT ANSWER-decreases
surface tension of water
Which class of hormones is derived from cholesterol? - CORRECT ANSWER-
Steroid
The hormones released by the posterior pituitary are - CORRECT ANSWER-
ADH and Oxytocin
Which of the following hormones is produced by gonadotrophs?
A) FSH
B) hGH
C) PRL
D) ACTH
E) TSH - CORRECT ANSWER-A) FSH
Where would you find corticotrophs and gonadotrophs? - CORRECT ANSWER-
anterior pituitary
Answers 100% PASS
Function of hemoglobin - CORRECT ANSWER-Oxygen transport
How would hypoxia affect the production of erythropoietin? - CORRECT
ANSWER-would stimulate an increase in production in the kidneys
What type of antiserum will type AB + blood agglutinate with? (anti-A, anti-B,
anti-Rh) - CORRECT ANSWER-Anti-A, Anti-B, and Anti-Rh
Which layer of the blood vessel alters the diameter of the lumen? - CORRECT
ANSWER-Tunica Media
Which chamber of the heart first receives freshly oxygenated blood? - CORRECT
ANSWER-Left Atrium
Starling's law in the capillary shows us that - CORRECT ANSWER-fluid
movement is reabsorption at the venule end of the capillary.
Which blood vessels function in the exchange of gases and nutrients? - CORRECT
ANSWER-capillaries
,Which of the following is true?
A) Systolic BP contributes more to MAP because it is a larger number.
B) Diastolic BP contributes more to MAP because it is a larger number.
C) Diastolic BP contributes more to MAP because the heart is resting longer than
it is contracting. - CORRECT ANSWER-**C) Diastolic BP contributes more to
MAP because the heart is resting longer than it is contracting.
Which of the following describes the effect that an increase in ADH has on BP?
a) Increase in BP
b) decrease in BP
c) no change in BP - CORRECT ANSWER-a) increase in BP
Which of the following lists the two primary lymphatic organs?
A) Peyer's patches and lacteals
B) Thymus and tonsils
C) Tonsils and red bone marrow
D) Thymus and red bone marrow - CORRECT ANSWER-D) Thymus and red
bone marrow
Which of the following lists the leukocytes that are phagocytic?
A) Basophils, eosinophils, neutrophils
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
, B) Basophils, erythrocytes, neutrophils
C) Macrophages, erythrocytes, neutrophils
D) Macrophages, eosinophils, neutrophils - CORRECT ANSWER-D)
macrophages, eosinophils, and neutrophils
The site of gas exchange within the lungs are the - CORRECT ANSWER-alveoli
What effect does surfactant have on water? - CORRECT ANSWER-decreases
surface tension of water
Which class of hormones is derived from cholesterol? - CORRECT ANSWER-
Steroid
The hormones released by the posterior pituitary are - CORRECT ANSWER-
ADH and Oxytocin
Which of the following hormones is produced by gonadotrophs?
A) FSH
B) hGH
C) PRL
D) ACTH
E) TSH - CORRECT ANSWER-A) FSH
Where would you find corticotrophs and gonadotrophs? - CORRECT ANSWER-
anterior pituitary
