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Biology 20 Final Exam (Alberta) Questions And 100% Correct Answers
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Biology 20 Final Exam (Alberta) Questions And100% Correct Answers
Neutrophils Answer White blood Cell (granulocyte), sphirical, multilobed nuceli,
granulated, 10-14 um
Basophils Answer White Blood Cell (granulocyte), sphirical, lobed nuclei, irregularly
shaped, release histamine, promotes blood flow to injury, granulated, 10-12 um, nucleus
fills whole cell
Eosinophils Answer White Blood Cell (granulocyte), sphirical, bilobed nuceli,
granulated, 10-14 um, phagocytize antigen - antibody complexes
Monocytes WBC, Can leave blood stream, further specialize as macrophages that
destroy bacteria, kidney shaped nuclei, nongranular
Lymphocytes WBC, non granular, thymus and red bone marrow, play role in the
formation of antibodies(defense function)
Plasma Fluid portion of the blood, composed of water plus dissolved gases, proteins,
sugars, vitamins, minerals, hormones, waste products. Transports blood cells, oxygen,
carbon dioxide, etc.
Red Blood Cell - Answer (Erythrocyte) Blood cell containing respiratory protein
hemoglobin and specialized for oxygen transport; no nucleus (formed part of blood)
White Blood Cell - Answer (leukocyte) Elongated colourless blood cell that plays role in
immunity; agranulocytes, granulocytes (formed part of blood)
,Platelet-part of the formed element of the blood, are fragments of cells that form when
larger cells in the bone marrow break apart, lacks a nucleus, and plays an integral role
in blood clotting
Vasodilation-increased diameter of blood vessels; superficial decreases body
temperature by bringing warm blood closer to the skin
Vasoconstriction - Answer Decrease in the diameter of blood vessels; near the skin
conserves body heat
Atrioventricular (AV) node - Answer Bundle of specialized muscle tissue located int he
wall of the right atrium; receives electrical stimulus from the SA nose and transmits this
impulse over the walls of the ventricles to start their contraction
Bundle of His-Answer Bundle of specialized fibers through which an electrical signal is
transmitted from the AV node, initiating the contraction of the right and left ventricles
Aorta-Answer Major artery that carries oxygenated blood away from the heart to all
regions of the body, except lungs
Tricuspid Valve-Answer (atrioventricular) Separates the right atria and ventricle, 3 flaps
Bicuspid Valve-Answer (atrioventricular) Separates left atria and ventricle, 2 flaps
Semilunar Valves-Answer (Aortic + Pulmonary) Half moon shaped, prevent the backflow
of blood when pumped to the lungs and body back into the heart
Circulatory System - Transport System of vessels that transports blood, the cells and
substances suspended and dissolved in blood throughout the body. Links all systems,
transports oxygen, waste products, nutrients, hormones, medication, enzymes, etc.
Internal temperature regulation, protects against blood loss from injury, disease
causing microbes, or toxic substances introduced to the body.
, Cardiovascular System - Answer The heart and blood vessels, cardio= heart, vascular=
vessels
Pulmonary Pathway Ans - Heart to lungs and back to the heart
Systemic Pathway Ans - Heart to body and back to the heart
Coronary Pathway Ans - Heart to heart vessels and back to the heart
Heart's Functions Ans - Pump blood through the body, keep oxygen rich blood
separated from oxygen poor blood, ensure that blood flows only in one direction through
the body
Capillaries Answer The smallest blood vessel; gases and other substances are
exchanged between the circulatory system and body tissues across one cell capillary
wall
Sinoatrial Node Answer Bundle of specialized muscle tissue located in the wall of the
right atrium of the mammalian heart; generates an electrical impulse that stimulates
cardiac muscle fibers to contract and relax rhythmically, producing a regular heart beat
(organic pacemaker)
Cardiac Output-Cardiac output = heart rate x stroke volume in mL/min; average output =
total volume of blood that circulates through the heart once per minute
Atherosclerosis-Answer Build up of plaque (fatty deposits, calcium, and fibrous tissues)
on the inside of artery walls. Blood flow is decreased and blood pressure increased;
Angioplasty and coronary bypass
Blood-Answer Tissue with a solid and fluid portion
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