Anatomy/Physiology Lecture (Introduction & Homeostasis)

17 cards

Lecture Exam 1


 
  
Created Jun 18, 2012
by
rartsch

 

 
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1
HypercalcaemiaL: define.  Controlled by which gland?  Which hormone reestablishes...
 
Too much calcium in the blood.  Controlled by the Thyroid Gland.  Hormone: Calcitonin,  ...
2
Hypocalcaemia:  define.  Controlled by which gland?  Which hormone reestablishes...
 
Too little calcium in the blood.Controlled by the Parathyroid Gland.  Hormone:  PTH...
3
What does Calcitonin do?
 
Reduces Hypercalcaemia when released by Thyroid Gland, by stopping Osteoclasts from putting...
4
What do Osteoclasts do
 
'Breakers of Bones" break down bone matrix which puts calcium into blood stream.
5
What does PTH (parathyroid hormone) do?  What 3 places does it do this?
 
Reduces Hypocalcaemia when released from parathyroid gland by 1) activating osteoclasts to...
6
What is the normal range for calcium in the body?
 
> 9mg (hypocalcaemia) 9mg - 11 mg (normocalcaemia range)>11mg (hypercalcamia)
7
Stimulus TO a control center is sent via ______?
 
The Afferent Pathway
8
Response to Stimulus is sent FROM Control Center via ____?
 
The Efferent Pathway
9
What are 2 examples of a Positive Feedback Mechanism?
 
Labor Contractions (Oxytocin release)Blood Clotting (blood loss stoppage)
10
Temperature is controlled by what control center in the body?
 
The Hypothalamus
11
How do platelets clot?
 
by releasing chemicals that attract other platelets
12
What gland controls blood volume in the body?  by releasing what hormone?
 
Hypothalamus GlandADH (AntiDiuretic Hormone)
13
How does ADH control blood volume in the body?
 
By stimulating the kidneys to reabsorb more water and return it to the bloodstream.
14
Why is a Positive Feedback Mechanism called 'positive' ?
 
Because the results proceed in the same direction as the initial change causing further deviation...
15
What gland controls labor contractions in a positive feedback mechanism?  by releasing...
 
The HypothalamusOxytocin

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