Practice Quiz 1

Up-regulation involves the loss of receptors and prevents the target cells from overreacting to persistently high hormone levels. True/False

False

Which of the following occurs in situations where more than one hormone produces the same effects at the target cell and their combined effects are amplified?
a) antagonism
b) synergism
c) permissiveness
d) summation

synergism

What is the name for the type of hormone, secreted by the pituitary that regulates other endocrine organs?
a) somatostatins
b) tropins
c) somatotropins
d) growth hormones

tropins

Which of the following hormones stimulates an increase in basal metabolic rate as a tropic hormone?
a) prolactin
b) follicle-stimulating hormone
c) adrenocorticotropic hormone
d) thyroid-stimulating hormone

thyroid-stimulating hormone

Which of the following glands increases blood calcium levels?
a) thyroid
b) adrenal
c) parathyroid
d) pituitary

parathyroid

Which hormone aids in water resorption?
a) parathyroid hormone
b) antidiuretic hormone
c) thyroid hormone
d) adrenocorticotropic hormone

antidiuretic hormone

Which of the following pairs correctly matches the adrenal gland zone, or area, with the class of hormones it produces?
a) zona fasciculata: catecholemines
b) zona glomerulosa: mineralocorticoids
c) zona reticularis: aldosterone d) medulla: glucocorticoids

zona glomerulosa: mineralcorticoids

Which of the following would increase cardiac output?
a) parasympathetic stimulation
b) epinephrine
c) decreased calcium during contraction
d) high blood pressure

epinephrine

Which of the following is NOT a factor that increases stroke volume?
a) increasing contractility
b) increasing afterload
c) increasing sympathetic stimulation
d) increasing preload

increasing afterload

What structures connect the individual heart muscle cells?
a) anastomoses
b) chordae tendineae
c) trabaculae carneae
d) intercalated discs

intercalated discs

Which of the following is NOT regulated by the blood?

a) nutrient levels
b) body temperature
c) fluid volume
d) pH level

nutrient levels

Which of the following plasma proteins is improperly matched with its function?

a) albumin: osmotic pressure
b) gamma globulins: lipid transport
c) alpha globulin: transport of metal ions and fat-soluble vitamins
d) fibrinogen: clotting

gamma globulins: lipid transport

In a centrifuged sample of blood, what should NOT be in the plasma portion of the sample?

a) electrolytes
b) fibrinogen
c) platelets
d) albumin

platelets

Which plasma constituent is the main contributor to clotting?

a) alpha globulins
b) beta globulins
c) albumin
d) fibrinogen

fibrinogen

Choose the statement that is true concerning hemoglobin.

a) It can bind a maximum of three oxygen molecules.
b) It is found in the plasma portion of blood.
c) It is composed of four protein chains and four heme groups.
d) When hemoglobin is not bound to oxygen, it appears blue

c

Which of the following does NOT stimulate erythrocyte production?

a) erythropoietin
b) testosterone
c) hyperventilating
d) a drop in normal blood oxygen levels

hyperventilating

On a blood smear slide prepared using Wright’s stain, you observe a large cell with a U-shaped nucleus and pale blue cytoplasm. This cell is most likely a(n) __________.

a) basophil
b) lymphocyte
c) monocyte
d) eosinophil

monocyte

Which of the following leukocyte is NOT correctly matched with its function?

a) lymphocytes: immune response against viral infections
b) eosinophil: bacterial macrophage
c) basophils: inflammation
d) monocytes: macrophage

b

What factor stimulates platelet formation?

a) interleukin 2
b) plasmin
c) thrombopoietin
d) erythropoietin

thrombopoietin

Hemostasis is important for __________.

a) white blood cell production
b) red blood cell recycling
c) red blood cell production
d) stoppage of bleeding

stoppage of bleeding

Which step in hemostasis involves activation of formed elements in the blood?

a) coagulation
b) vascular spasm
c) fibrin production
d) platelet plug formation

platelet plug formation

Which of the following represents a difference between extrinsic and intrinsic blood clotting pathways?

a) One is faster than the other.
b) One involves calcium ions, while the other does not.
c) One is triggered by tissue damage, while the other cannot be triggered by tissue damage.
d) One leads to the production of prothrombin activator and the other does not.

a

Which of the following would NOT lead to a bleeding disorder?

a) impaired liver function
b) excess calcium in the diet
c) thrombocytopenia
d) vitamin K deficiency

b

A person who lacks agglutinogen A but has agglutinogen B would have blood type __________.

a) B
b) A
c) O
d) AB

b

Choose the incompatible transfusion.

a) Donate type O blood to a recipient with type AB blood.
b) Donate type B blood to a recipient with type AB blood.
c) Donate type B blood to a recipient with type O blood.
d) Donate type A blood to a recipient with type AB blood.

c

Which ABO blood type is considered to be the universal recipient?

a) O
b) B
c) AB
d) A

ab