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26 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is Differentiation?
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cells become specialized in terms of form and function
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What makes a cell different from others?
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What are the 4 (four) primary tissue types?
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Muscle
Nervous Connective Epithelial |
M
N C E |
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What makes up the internal enviorment?
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Plasma 20%
IFC 80% (Extracellular fluid) |
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What is Homeostasis?
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ability to keep the inernal enviornment stable both physically and chemically
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activated when disturbance in place
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What are compensating regulatory responses that result in a stable internal enviornment
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Homeostatic Mechanism
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Inter connection of cells that work together to maintain physiological and chemical properties
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Homeostatic System
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What is needed in order to carry out a Homeostatic mechanism?
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______is the pathway by which the signal is carried away from the receptor
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Afferent Pathway
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Specialized cells that detect changes
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Receptors
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_________ _________ interpids information that was received from receptors and decodes it.
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Modulating Center ( Intergrading Center)
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A pathway by which a signal leaves the modulating center after decoding
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Efferent Pathway
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what is a Negative Reflex
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A response that is to the opposite direction of the stimulus
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homeostasis
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Name the function of Calcium in
- Cells - Muscle - Bone |
cell= to secrete hormones, enzymes
muscle= contraction (smooth,skeletal) bone= matrix substance support |
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Explain what happens when Calcium levels drop?
BONES |
1. PTH ( Parathyroid Hormone) gets released by Parathyroids
2. PTH decalsifies bone and calcium is released into the blood |
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Explain what happens when calcium levels drop?
Kindeys |
PTH promotes the re-absorbtion of calcium by the filtrate
by using hormones ADH Aldosterone Glucotricoids |
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Explain what happens when calcium levels drop?
GI Track |
Active absorbtion of calcium by binding the vitamin D3 to PTH
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How does pituitary affect endocrine glands?
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By producing regulating hormones that affect endocrine tissue
TSH (thyroid stimulating hormone)LH, FSH, ACTH, |
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Programmed Cell death_____
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apoptosis
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What is a local immune reaction ?
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Local Homeostasis (Inflamation)
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What chemical controls Inflamation?
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Immuno chemicals Cytokines
local effect |
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What makes local control different from reflex?
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Local control is restricted to one part of the body
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________ are local acting chemical mediators used to carry out local control
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Paracrines aka Autocoids
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Name examples of Paracrines (autocoids) local acting, short acting ! DO not get into the blood!
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Prostoglandins
Prostocyclins Thromboxanes Leukotrienes quickly perform effect and then inactivated |
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Chemical messengers that allow cells to communicate
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Receptors
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What is messenger Pleotropy ?
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The ability of a single messenger to affect more than one cell type
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Multiple forms of a given receptor are called______ ______
example ACH |
Receptor Isoforms
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what is an Agonist?
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a chemical other than the normal messenger that gives similar effect ex: Valium
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