F214 OCR Biology communication key definition HARDEST QUIZ EVER

F214 OCR Biology communication key definition quiz

another of my mind boggling HARDEST QUIZ EVER!

?
  • Created by: Ruby
  • Created on: 04-12-12 23:25
Define homestasis
the maintainance of internal body envirnment in a constant stable state without external changes which may take place
1 of 13
define perpherial temperature receptors
receptors which monitor change in the skin temperature in order to detect change in body core temperature
2 of 13
define cell signalling
type of communication system whereby one cell will release chemicals detected by the target cell, acts as a responce
3 of 13
define receptors
monitors the factors that are controlled ie. temperature of the blood
4 of 13
define effectors
receives information in the form of signals from the receptors enabling efficient communication in order to carry out an action ii.e low secretion of insulin
5 of 13
A neuronal system is
a system which is a vital part of the bodys communication system. neurones are interconnected in order to send messages(AP) to the brain/other neurons in order to stimulate a responce
6 of 13
A hormonal system is
a system part of the vital communication system in the body. Hormones are secreted from the pancreas inorder to maintain glucose conc in the blood
7 of 13
negative feedbakc is a process that....
brings about a reversal of any change in conditions. ensures that optimum temp is ready state can be maintained as the external environment is returned to its original set of conditions after a change. essential for homeostasis
8 of 13
Positive feedback is a process that...
detects a change by the receptors and allows the parametre to increase. . Not essential for homeostasis
9 of 13
Example of a negative feedback
maintaining glucose concentation in the blood
10 of 13
example of positive feedback...
dialation of the cervix during child birth
11 of 13
An endotherms are
organisms that are able to use their own internal source of heat generated form the metabolism of the liver to maintain body core temperature
12 of 13
An ectotherm are
organisms that are not able to use their own internal source of heat generated to maintain body core temperature. Their body core temperature fluctuates with the envornment
13 of 13

Other cards in this set

Card 2

Front

define perpherial temperature receptors

Back

receptors which monitor change in the skin temperature in order to detect change in body core temperature

Card 3

Front

define cell signalling

Back

Preview of the front of card 3

Card 4

Front

define receptors

Back

Preview of the front of card 4

Card 5

Front

define effectors

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »