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Pract 2, homeostasis, physiology

 Lecture video



 



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MCQ 

 ١_Meaning of Homeostasis:
A) contributor and provider
B) expand
C) same or constant
D) receiver
2_The ECF is called ……………….







 
  
3_The previous figure is an example of .....

4-Mention other examples of your answer in no. 2 ?….

A)……………….

B) ………………

5_What system has little to contribute to the homeostasis of the organism?
A) Urinary System
B) Reproductive System
C) Respiratory System
D) Nervous System

6-There are 2 main control systems ………………… , ……………….
7-Define feedback control ………………………….
8-Positive feedback control Leads to stability of internal environment ( T or F )
9-Write a diagram of death cycle .
10-Mention an example of Positive feedback that can be useful ?

11-If there`s a disturbance in the previous cycle it will leads to what`s called …… and explaine what will occur then ?





12-This figure represent what type of feedback control ………..


13-This figure represent what type of feedback control…….. mention another example …………….
14-List type of feedback control and mention one example in each ?
15-Define homeostasis and draw a diagram to illustrate how body systems contribute in homeostasis ?



Answers of mcq


1)C

5)b

Answers of short essay


2)internal environment

3) negative feedback

4) regulation of ABP

regulation of co2

6) nervous system for rapid control

Endocrinal system for slow control

7) means the control of certain function by the resultant effect of this function

9)slide 11 or 12

10)Positive feedback can sometimes be useful i.e. Operate in the body to complete certain function e.g. process of labor:

•Stretch of uterine cervix reflex uterine contraction descend of baby more cervical stretch more uterinecontraction more descend of baby and so on until labor is complete

11)Heat stroke

12) positive feedback

13) negative feedback

14) positive feedback

Negative feedback

15)Homeostasis means keeping the internal environment (extra cellular fluid) constant to optimum body function regarding,

1- Water content

2- Ions

3- Temperature

4- Ph


Answers of true and false 


8)f

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