BIOS 255 Exam 1 with expert curated questions and answers-Chamberlain

which WBC is considered agranular? choose all apply

lymphocyte and monocyte

_____ is an enzyme that is a sticky protein that forms the framework of blood clotting.

fibrin

Red-Orange, bi-lobed, and make up 2-4% in body-Describes what cell?

eosinophils

A patient has type O-blood. if a blood transfusion is needed, what blood type can they receive?

O-

"Dubb" sound from the heart comes from what?

closing of the SV valves (lubb sound comes from the closing of the AV valves)

when blood is centrifuged, where are RBCs found?

at the bottom

B lymphocytes are responsible for plasma cells into antibodies, where do they mature?

red bone marrow

T or F: the epicardium is the outer layer, responsible for surface tension

false

name the blood cell in the picture

monocyte

name the blood cell in the picture

basophil

name the blood cell in the picture

neutrophil

name the blood cell in the picture

lymphocyte

name the blood cell in the picture

eosinophil

Phase 2 contains what ion predominantly?

Ca+

EPO, erythropoietin is secreted by what organ?

kidneys

the platelet plug is part of which pathway?

intrinsic

The P-Q interval on a EKG represents what?

ventricular filling

EDV (End-Diastolic Volume) represent what in the heart?

amount of blood after filling.

which part of the nervous system is responsible for slowing down the heart?

parasympathetic NS

which blood vessels are responsible for carrying oxygenated blood to the heart?

pulmonary vein

what is the proper electrical conduction from start to finish?

SA node- AV node (bundle)- Bundle branches- Purkinje

the heart has ____ chambers?

4

name the AV valves

tricuspid (right) and bicuspid/mitral (left)

what anchors the Chordae Tendineae?

papillary muscle

the left/right pulmonary veins carry what?

oxygenated blood (hit the lungs now going toward the heart)

After leaving the left ventricle, blood will enter?

aorta

what is one characteristic of identifying the left ventricle (externally)?

the size of the myocardium (it is big)

what is NOT a function of intercalated disc?

only found in the atrium

what are the functions of the intercalated discs?

hold cells together, helps electrical signals pass quickly, supports communication and strength (glue+wire+support)

What heart valve needs to open to allow blood to go into the pulmonary system?

right SV valve (aka pulmonary valve)

The QRS complex signifies what?

ventricular depolarization

what represents the top of the "parachute" in our analogy of the heart in lecture?

valve

what are 3 factors of resistance (blood pressure in a blood vessel)

diameter, viscosity, length