Exam 1

Which of the following transports oxygen rich blood?

pulmonary vein

to ausculate the aortic semilunar valve, you would place your stethoscope in the.....

second intercoastal space to the right of the sternum

during an afternoon class, Lisa starts to feel hungry and worries that her blood sugar level may be dropping. Which hormone is helping to prevent a drop in blood sugar level?

glucagon

an individual who is blood type AB negative can....

receive any blood type in moderate amounts except that with the Rh antigen

chemical substances secreted by cells into the extracellular fluids that travel through the blood and regulate the metabolic function of other cells in the body are called

hormones

oxytocin...

release is an example of a positive feedback control mechanism

normal development of the immune response is due in part to hormones produced by the

thymus gland

which of the following is not a functional characteristic of WBCs?

granulosis

if the length of the absolute refractory period in cardiac muscle cells was the same as it is for skeletal muscle cells.......

? contractions might occur, which would stop the hearts pumping action

regulating hormones from the hypothalamus...

first enter into the hypophyseal portal system

mineralcorticoroid is to aldosterone as glucocorticoroid is to....

cortisol

correct the correct statement about the heart valves

the AV valves prevent backflow of blood into the atria during ventricular contraction

the left ventricular wall of the heart is thicker than the right wall in order to

pump blood with greater pressure

when neither anti-A serum or anti-B serum clot on a blood plate with donor blood, the blood type is.....

O

when does the period of atrial repolarization occur?

ventricular depolarization

a person with an extremely high count of neutrophils is likely suffering

a bacterial infection

the source of blood carried to capillaries in the myocardium would be the ...

coronary arteries

if we were able to artifically alter the membrane permeability of pacemaker cells so that sodium influx is more rapid, ....

threshold is reached more quickly and heart rate would increase

gluconeogenesis, the formation of glucose from fats and proteins, is due to the action of...

cortisol

compared to skeletal muscle, cardiac muscle....

has gap junctions that allow it to act as a functional syncytium

loss of fibrinogin with the plasma would most likely cause which of the following?

loss of blood clotting

which of the following is NOT a parathyroid gland mechanism to maintain adequate levels of blood calcium?

inhibition of calcitonin synthesis

blood within the pulmonary veins returns to the ...

left atrium

several hormones ae synthesized in the hypothalamus and transported to the anterior pituitary gland. the machanism of transportation from hypothalamus to anterior pituitary gland is through the...

hypophyseal portal system

Which vessel of the heart receives blood from the right ventricle?

pulmonary trunk

the posterior lobe of the pituitary gland is NOT a true endocrine gland because....

it is only a hormone storage area that receives hormones from the hypothalamus for release

which of the following is NOT a category for endocrine gland stimulus?

enzymatic

one of the least complicated of the endocrine control systems directly responds to changing blood levels of ions and nutrients. which of the following describes this mechanism?

hormonal stimulation

during exercise, which of the following would occur on an ECG compared to an individual at rest?

the time from one R to the next R would decrease

which of the following is NOT part of the intrinsic conduction system of the heart?

AV valve

Which of the events below does NOT occur when the semilunar valves are open?

ventricles are in diastole

Together, leukocytes and platelets comprise approximately ________ percent of total blood volume.

1

antidiuretic hormone (ADH)

secretion is inhibited by alcohol

which of the following factors does not influence heart rate

skin color

which of the following is not a structural characteristic that contributes to erythrocyte gas transport functions?

mitotically active

What is the average normal pH range of blood?

7.35-7.45

Which blood type is the universal donor?

O

which of the following is not a phase of hemostasis?

fibrinolysis

which of the following receive blood during ventricular systole?

both the aorta and pulmonary trunk

select the correct statement about the function of myocardial cells.

the entire heart contracts as a unit or it does not contract at all

A man has been told that he is not synthesizing enough follicle-stimulating hormone (FSH), and for this reason he may be unable to father a child. Choose the correct statement to explain this problem.

FSH stimulates sperm production in the testes

No visible cytoplasmic granules are present in ________.

monocytes

During the period of ventricular filling ________.

blood flows passively through the atria and the open AV valves into the ventricles

Adrenocorticotropic hormone (ACTH)

secretion is regulated by a hypothalamic regulatory hormone

When viewing a dissected heart, it is easy to visually discern the right and left ventricles by ________.

noticing the thickness of the ventricle walls

Normal heart sounds are caused by which of the following events?

closure of the heart valves

which of the following is characteristic of all leukocytes?

they are nucleated

Fred's blood was determined to be AB positive. What does this mean?

there are no antibodies to A, to B, or to Rh antigens in the plasma

bisphenol-A (BPA) is an endocrine disruptor that can leach out of certain plastics.............which of the following explains how persistent small amounts of BPA in the body can have effects?

up-regulation

which of the following is a protective function of blood?

maintenance of body temp

the P wave of a normal electrocardiogram indicates.....

atrial depolarization

which of the following is NOT a steroid based hormone?

epinephrine

the AV valves are closed ..

when the ventricles are in systole