Endocrine System
The thyroid gland is located here:
a. superior to the kidneys
b. inferior to the hypothalamus
c. inferior to the larynx and anterior to the trachea
d. posterior to the stomach
c. inferior to the larynx and anterior to the trachea
These cells are phagocytic, have a tri-lobed nucleus, and make up the largest percentage of leukocytes:
a. basophils
b. eosinophils
c. lymphocytes
d. monocytes
e. neutrophils
e. neutrophils
The heart is located here:
a. inside the pericardial cavity
b. in the mediastinum,which is located in the pericardial cavity
c. in the mediastinum, which is located in the thoracic cavity
d. in the thoracic cavity, which is located in the mediastinum
c. in the mediastinum, which is located in the thoracic cavity
Blood helps maintain homeostasis by all of these mechanisms except:
a. regulates pH
b. transports nutrients and gases
c. eliminates waste products
d. clot formation
e. protects against foreign substances
c. eliminates waste products
This hormone is released in response to high blood calcium levels:
a. insulin
b. cortisol
c. calcitonin
d. parathyroid hormone
c. calcitonin
This statement best describes the function of B cells:
a. releases heparin to inhibit clotting
b. destroy tumor cells
c. produce antibodies
d. reduce inflammatory response
e. phagocytize bacteria
c. produce antibodies
In cardiac muscle cells rapid depolarization is caused by the opening of this:
a. voltage-gated Ca2+ ion channels
b. voltage-gated K+ ion channels
c. voltage-gated Na+ ion channels
d. b and c
c. voltage-gated Na+ ion channels
This hormone helps to maintain blood glucose levels by stimulating gluconeogenesis:
a. androgens
b. cortisol
c. insulin
d. aldosterone
b. cortisol
This hormone is NOT secreted by the pancreas:
a. glucagon
b. glucocorticoids
c. insulin
d. somatostatin
b. glucocorticoids
This statement is true for an individual with anti-A antibodies in the plasma:
a. the individual is blood type A
b. the individual is blood type B
c. the individual is blood type AB
d. the individual can be either blood (type B or AB)
b. the individual is blood type B
This occurs at the same time as atrial systole:
a. the ventricles are also in systole
b. the atrioventricular valves are closed
c. blood is being pumped into the aorta and pulmonary trunk
d. blood is being pumped into the ventricles
d. blood is being pumped into the ventricles
Cells in the red bone marrow that give rise to all the formed elements of the blood are called this:
a. monoblasts
b. myeloblasts
c. megakaryoblasts
d. proerythroblasts
e. hemocytoblasts (stem cells)
e. hemocytoblasts (stem cells)
The thymus gland secretes a hormone that is involved in this:
a. regulation of red blood cell production
b. regulation of the reproductive cycle in females
c. control of metabolism
d. maturation of T lymphocytes
d. maturation of T lymphocytes
Agglutination, which occurs during transfusion reactions, is caused by binding between these:
a. hemoglobin and the kidney tubule cells
b. clotting proteins and the enzymes that activate them
c. RBC membrane antigens and plasma antibodies
d. platelets and endothelial cells
c. RBC membrane antigens and plasma antibodies
Contraction of the atrial myocardium is called this:
a. atrial systole
b. atrial diastole
c. ventricular systole
d. ventricular diastole
a. atrial systole
The target tissue of glucagon is this:
a. skeletal muscle
b. fat tissue
b. liver
c. brain
d. thyroid
b. liver
The releasing and inhibiting hormones are produced by this:
a. hypothalamus to control posterior pituitary
b. hypothalamus to control anterior pituitary
c. anterior pituitary
d. posterior pituitary
b. hypothalamus to control anterior pituitary
Excessive bleeding from a torn vessel that is not stopped can result in a positive feedback loop, consisting of ever decreasing blood volume and blood pressure and results in death.
T/F
True
In an EKG, the P wave represents this:
a. depolarization of the atria
b. repolarization of the atria
c. depolarization of the ventricles
d. repolarization of the ventricles
a. depolarization of the atria
The anterior pituitary gland is also called this:
a. adenohypophysis
b. neurohypophysis
c. hypothalamus
d. sella turcica
a. adenohypophysis