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SLCC 2425 - Physiology Lab Final Exam Questions with Latest Update
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Blood Pressure - Answer-Contraction of the ventricles generates a pressure wave that is transmitted through the blood vessels. Blood flow - Answer-Supplies the necessary nutrients to the cells of the body & transports products produced by cells. Affected by: 1. Force of gravity 2. Recoil of ...

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  • October 15, 2024
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  • 2024/2025
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  • slcc 2425 physiology lab final exam questions wi
  • blood pressure answer contraction of the ventric

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SLCC 2425 - Physiology Lab Final Exam
Questions with Latest Update
Blood Pressure - Answer-Contraction of the ventricles generates a pressure wave that
is transmitted through the blood vessels.

Blood flow - Answer-Supplies the necessary nutrients to the cells of the body &
transports products produced by cells.
Affected by:
1. Force of gravity
2. Recoil of arterial elastic tissue following contraction
3. Milking action of tissue surrounding veins
4. Expansion of chest cavity during respiration

cardiac output - Answer-= HR x SV

systolic pressure - Answer-Pressure during ventricular contraction

pulmonary circulation - Answer-Blood flow from the right ventricle to the left atrium that
passes through the lungs

systemic circulation - Answer-Blood flow from the left ventricle to the right atrium that
serves all of the organs in the body

diastolic pressure - Answer-Pressure after ventricles relax

Auscultatory technique - Answer-placement of a BP cuff around the upper arm that is
inflated to approximately 160 mmHg to produce complete occlusion of the brachial
artery.
1st sound = systolic
sound stops = diastolic

stethoscope - Answer-Instrument used to amplify sounds within the body when tambour
is placed upon skin.

sphygmomanometer - Answer-BP gauge attached to cuff

pacemaker - Answer-specialized cardiac cells, also known as SA node, that are auto-
rhythmic (do not require action potentials from nerves or hormone stimuli.)

SA node - Answer-AKA Sinoatrial node that can initiate action potentials independently

acetylcholine - Answer-Released by postgangilionic neurons, slows down HR.

, norepinephrine - Answer-Stimulation of sympathetic nervous system causes post
ganglionic neurons to release this.

epinephrine - Answer-Adrenal medulla gland cells release this when stimulated by
sympathetic nervous system.

Myogenic control - Answer-Smooth muscles of an arteriole will either contract or relax
depending on the pressure of the blood that reaches the arteriole.
Maintains a constant blood flow to the brain and kidneys.

A,B,O and Rh bood group systems - Answer-Based on antigen-antibody reactions

agglutination - Answer-a reaction between incompatible RBC agglutinogens and plasma
antibodies resulting in a visible clumping or sticking together of RBCs

What are considered normal systolic and diastolic pressures at rest? - Answer-120/80
mmHg

What physiological processes does the systolic pressure show? - Answer-The
contraction of the ventricles in the heart

What physiological processes does the diastolic pressure show? - Answer-The
relaxation of the ventricles and pressure drop in the heart

Why is abnormal diastolic pressure indicative of cardiovascular disease? - Answer-a
number consistently higher than 90 mmHg = hypertension
this poses a risk for cardiovascular disease and heart attack, as this pressure is referred
to the "after load" of the heart.

Blood Typing - Answer-A = anti-B
B = anti-A
AB = NONE
O = both A & B
Rh = + or -

What are the effects of exercise on blood pressure and pulse rate? - Answer-Increase in
BP and HR due to increased need for oxygen

Hormone - Answer-Chemical messengers, mostly those manufactured by the endocrine
glands, that are produced in one tissue and affect another

target cell - Answer-cell that has a receptor for a particular hormone

negative feedback - Answer-A primary mechanism of homeostasis, whereby a change
in a physiological variable triggers a response that counteracts the initial change.

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