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Physiology Terms

Definitions, functions, etc.

QuestionAnswer
Epithelial tissue; def/fun tissue of tightly packed cells, act as a barrier or interface.
Epithelial tissue; places lining or organs, cavities, and outside of the body.
Connective Tissue; def/fun fills internal space, structural support, protects organs, stores energy, and connects other types of tissue.
Connective Tissue; places bone, cartilage, blood, adipose
Muscle Tissue contract to generate force/tension in response to nerve signals.
Nervous Tissue Senses stimuli and transmits electrical signals throughout the animal.
Homeostasis self-regulation of the body to maintain the internal conditions regardless or external environment.
Negative Feedback Buildup of end product shuts the system off, returns the system to the set point.
Positive feedback amplifies a stimulus and moves away from the set point, drives a process to completion.
Open Circulation Circulatory fluid and interstitial fluid are the same; bathes the cells.
Closed Circulation Circulatory fluid in vessels and distinct from interstitial fluid.
Single circulation 1 loop; heart-gills-organs-heart
Double circulation 2 loops; lungs-heart-organs-heart
Blood flow of the mammalian heart superior/inferior vena cavae- right atrium - atrioventricular valve - right ventricle - semilunar valve - pulmonary artery - lungs - pulmonary vein - semilunar valve - left atrium - atrioventricular valve - left ventricle - aorta - upper/lower body
Aorta Carries blood from left ventral to the body
Arteries Carry blood from heart to organs
Veins Carry blood from organs to heart
Capillaries site of chemical exchange between blood + interstitial fluid ; thin porous walls
Diastole relaxation phase, fills with blood
Systole contraction phase, squeezes blood out
Heartbeat control; step 1 Signals from SA node spread through atria
Heartbeat control; step 2 signals are delayed at AV node
Heartbeat control; step 3 bundle branches pass signals to heart apex
Heartbeat control; step 4 signals spread through ventricles
Created by: B_
 

 



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