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SHARP Exam 3 Questions with Complete Answers
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SHARP Exam 3 Questions with Complete Answers
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SHARP Exam 3 Questions withComplete Answers
Pericardium - Answer--protective membrane that surrounds heart
-Secretes pericardial fluid; a lubrication fluid
septum - Answer-a wall that separates the right side from the left side of the heart
never - Answer-Oxygen poor blood and oxygen rich blood __________ mix
atrium (atria) - Answer-one of the upper chambers of the heart (right or left) that
receives blood
Ventricles - Answer-one of the lower chambers of the heart (right or left)
Atrioventricular (AV) valve - Answer--valve located between the atrium and the ventricle.
-Prevent back-flow into the atria when ventricles are contracting
tricuspid valve - Answer-AV valve in right side of heart
bicuspid valve - Answer-AV valve in the left side of heart
semilunar valves - Answer-valves that prevent blood return to the ventricles after
contraction.
chordae tendineae (heart strings) - Answer-strong fibrous strings that anchor the valves;
prevents valves from inverting
heart murmur - Answer-leaky AV valve; a slight swishing sound after the "lub"
systemic circuit - Answer--blood vessels that transport oxygenated blood from left
ventricle to body
-deoxygenated blood returns to right atrium
pulmonary circuit - Answer--blood vessels that take deoxygenated blood from right
ventricle to the lungs
-oxygenated blood returns to left atrium
coronary arteries - Answer-artery that supplies blood, oxygen, and food to the wall of
the heart
cardiac cycle - Answer-heartbeat; one complete cycle of systole and diastole
systole - Answer-contraction period of the heart during the cardiac cycle
,diastole - Answer-relaxation period of a heart chamber during the cardiac cycle.
SA (sinoatrial) node - Answer-specialized myocardial cells in the wall of the right atrium
(autorhythmicity).
True - Answer-the sinoatrial (SA) node is the pacemaker of the heart and initiates the
heartbeat
T/F?
AV (atrioventricular) node: - Answer-specialized mass of conducting cells located at the
atrioventricular junction in the heart.
Atrioventricular bundle: - Answer-bundle of specialized fibers that conduct impulses
from the AV node to the right and left ventricles.
Purkinje fibers - Answer-modified cardiac muscle fibers of the cardiac conduction
system
Electrocardiogram (ECG) - Answer-recording of electrical activity associated with the
heartbeat
P wave - Answer-atria about to contract
QRS wave - Answer-ventricles about to contract
T wave - Answer-ventricular muscle fiber recovery
Ventricular fibrillation - Answer-caused by uncoordinated, irregular activity in the
ventricles
defibrillation - Answer--a strong electrical current applied to the chest for a short time
-all heart cells discharge electricity at once
gastrointestinal (alimentary) tract - Answer--a continuous hollow tube extending from the
mouth to the anus
-approx. 30 feet long in humans
small intestine and large intestine - Answer-the walls of the gastrointestinal tract are
constructed by the oral cavity, pharynx, esophagus, stomach, and the __________ and
___________
ingestion, digestion, movement, absorption, elimination - Answer-what are the 5
processes necessary for the digestive process?
ingestion - Answer-the taking of food or liquid into the body via the mouth
, digestion - Answer-breaking down of large nutrient molecules into smaller molecules
that can be absorbed
mechanical digestion - Answer-cutting and mastication of food; peristalsis
Chemical digestion - Answer-digestive enzymes hydrolyze macromolecules
movement (mxing) - Answer-food is passed from one organ to the next via peristalsis
Absorption - Answer-taking in of subunit molecules by cells or membranes
elimination - Answer-process of expelling substances from the body via defecation
hard palate - Answer-bony anterior portion of the roof of the mouth
soft palate - Answer-entirely muscular portion at the back of the roof of the mouth
Uvula - Answer-tissue tag hanging from soft palate
tongue - Answer-occupies floor of the mouth
-grip food
-reposition food
-mix food w/ saliva
-movement from bolus - Answer-what are the 4 functions of the tongue?
B. absorption - Answer-which of the following is not a function of the tongue?
A. mix food with saliva
B. absorption
C. movement from bolus
D. reposition food
salivary glands - Answer-glands associated with the mouth; secretes saliva
saliva - Answer-solution of water, mucus, salivary amylase, lysozyme, and bicarbonate
-cleanse mouth
-dissolve food chemicals for tasting
-moistens food, aids in compacting food into bolus
-contains enzymes that begin chemical breakdown of starch - Answer-what are the 4
functions of saliva?
A. reposition food - Answer-which of the following is NOT a function of saliva?
A. reposition food
B. cleanse mouth
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