Pre-Lab Quizzes

The normal hematocrit value for females/males is generally higher than that of the opposite sex.

males

The least numerous but largest of all agranulocytes is the

monocyte

The heart is enclosed in a double-walled sac called the

pericardium

Three types of formed elements found in the blood include erythrocytes, leukocytes, and ____.

platelets

Define hormone

chemical messenger secreted into the bloodstream by an endocrine gland

The heart is divided into ____ chambers.

four

The pancreas produces two hormones that are responsible for regulating blood sugar levels. Name the hormone that increases blood glucose levels.

glucagon

When determining the hematocrit/hemoglobin, you will centrifuge whole blood in order to allow the formed elements to sink to the bottom of the sample.

hematocrit

The heart serves as a double pump. The right/left side serves as the pulmonary circulation pump, shunting carbon dioxide-rich blood to the lungs.

right

This gland is rather large in an infant, begins to atrophy at puberty, and is relatively inconspicuous by old age. It produces hormones that direct the maturation of T cells. It is the ____ gland.

thymus

The ____ gland is composed of two lobes and located in the throat, just inferior to the larynx.

thyroid

The right atrioventricular valve, or tricuspid valve/mitral valve, prevents backflow into the right atrium when the right ventricle is contracting.

tricuspid

____ are the leukocytes for releasing histamine and other mediators of inflammation.

Basophils

____ are essential for blood clotting.

Platelets

Blood flows through the heart in one direction-- from the atria to the ventricles.

True

If an individual is transfused with the wrong blood type, the recipient's antibodies react with the donor's antigens, eventually clumping and hemolyzing the donated RBC's.

True

The anterior pituitary gland is also referred to as the master endocrine gland because it controls the activity of many other endocrine glands.

True

The gonads are considered to be both endocrine and exocrine glands

True

Blood typing is based on the presence of proteins known as antigens/antibodies on the outer surface of the red blood cell plasma membrane.

antigens

The left ventricle discharges blood into the ____, from which all systemic arteries of the body diverge to supply the body tissues.

aorta

Mature erythrocytes/leukocytes are the most numerous blood cells and do not have a nucleus.

erythroocytes

The blood vessels that supply blood to the heart itself are the

coronary arteries

An endocrine/exocrine gland is a ductless gland that empties its hormone into the extracellular fluid from which it enters the blood. endocrine

endocrine

The pituitary gland, also known as the ____, is located in the sella turcica of the sphenoid bone.

hypophysis

Two microscopic features of cardiac cells that help distinguish them from other types of muscle cells are branching of the cells and

intercalated discs

In the heart, the left/right ventricle has thicker walls and a basically circular cavity shape.

left

What is the name of the receiving chambers of the heart?

left/right atrium

The outer cortex of the adrenal gland is divided into three areas. Which one produces aldosterone?

zona fasciculata