Anatomy Exam 4

Which leukocytes are granulocytes?

Neutrophils, Eosinophils, Basophils

Which term best describes the function of blood when considering the presence of leukocytes and antibodies?

Protection

Which pair is located more anteriorly in a heart in normal position?

Right atrium and right ventricle

Vasoconstriction of the arterioles will result in ________ in blood pressure

an increase

The life span of an erythrocyte is about _________ days.

120

During a cardiac cycle, how many of the four chambers contract at any one time?

2

How many oxygen molecules may bind to a single molecule of hemoglobin?

4

Which structure marks the end of the left ventricle and the entrance to the aorta?

Aortic semilunar valve

Parasympathetic innervation of the heart occurs via

CN X.

Which action causes the closure of the right atrioventricular valve?

Contraction of the right ventricle

Which are characteristic of type A blood?

Has anti-B antibodies,Has surface antigen A on its erythrocytes, Will agglutinate with blood type B

Which are characteristic of leukocytes?

Have a nucleus, Have no hemoglobin, Depending on type, may or may not contain granules

Which carries blood from the liver to the inferior vena cava?

Hepatic veins

The brachiocephalic veins are formed by the

Internal jugular veins, Subclavian veins

Which heart chambers pump deoxygenated blood?

Right atrium and right ventricle

What part of the cardiac conduction system is located in the posterior wall of the right atrium, adjacent to the entrance of the superior vena cava?

SA node

The sequence of events in the transmission of an impulse through the heart muscle is

SA node- through the atria-AV node-AV bundle-bundle branches-Purkinje fibers-through the ventricles

Which sequence indicates the correct pathway for blood in the arterial flow of the upper appendage?

Subclavian artery - axillary artery - brachial artery - ulnar artery

Which circuit of the cardiovascular system is responsible for sending blood to the kidneys, stomach, and pelvic regions?

Systemic circuit

In the elastic arteries, which of the tunics have elastic fibers?

Tunica media, tunica intima, and tunica externa

An individual's hematocrit is dependent on his or her

age. sex, altitude.

The smallest and most abundant plasma proteins are the

albumins.

Blood pressure is lowest in

arteries.

The hemoglobin found in erythrocytes is able to chemically attach to

both oxygen and carbon dioxide.

The superior vena cava is formed by the merging of the _______ veins.

brachiocephalic

The artery that bifurcates into the right subclavian artery and the right common carotid artery is the

brachiocephalic artery.

Gas, nutrient, and waste exchange occur between the __________ and the tissues of the body.

capillaries

Valves in veins

cause venous blood flow to go in only one direction.

The papillary muscles attach to the cusps of the atrioventricular valves by means of the

chordae tendineae.

The end of the aorta occurs when the vessel bifurcates into the

common iliac arteries.

The atria are separated from the ventricles externally by the

coronary sulcus

The left and right coronary arteries travel within the

coronary sulcus.

The largest arteries of the body are classified as

elastic arteries.

Among the constituents of plasma, sodium, potassium, and bicarbonate ions are classified as

electrolytes.

The artery pair that supplies the lower limbs are the

external iliac arteries.

As an arterial pathway moves farther from the heart, the arteries

get smaller.

The process of producing the formed elements of blood is called

hemopoiesis.

Sympathetic innervation of the heart

increases the heart rate, increases the force of contractions.

The cell-to-cell contacts of the cardiac muscle fibers are called

intercalated discs.

The popliteal artery supplies the

knee joint.

The reason it is more appropriate to call an erythrocyte a "formed element" rather than a "cell" is that erythrocytes

lack a nucleus and organelles.

T-cells are a category of

lymphocytes.

The leukocyte that will migrate in the blood and take up residence in the tissues as macrophages is the

monocyte.

The layer of the heart wall composed of cardiac muscle tissue is the

myocardium.

The leukocyte that is very active during a bacterial infection is the

neutrophil.

Usually the most numerous of the leukocytes are the

neutrophils.

The artery that arises from the descending aorta and is immediately inferior to the celiac trunk is the _____ artery.

superior mesenteric

During ventricular systole

the semilunar valves open and the AV valves close.

The ________ is composed of circularly arranged layers of smooth muscle cells.

tunica media

The epicardium is another name for the

visceral layer of the serous pericardium.