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.
