L3 Homeostasis + L4 blood physiology

Question 1

what is meant by internal environment ?

Answer 1

extracellular fluid: plasma + interstitial fluid

Question 2

what are the basic components of the homeostasis control system and what do they do ?

Answer 2

receptors : detect change

integrating system : compare with set point and generate the signal necessary for correction of error

effectors : respond to signals from center to correct error

Question 3

most homeostatic activity is done by a ____

Answer 3

negative feedbackloop

Question 4

what is the pH of blood?

Answer 4

7.35-7.45

Question 5

what is the average blood volume in males and females ?

Answer 5

males : 5-6 L

females :4-5L

Question 6

what are the main components of blood after it is centrifuged ?>

Answer 6

1. ) plasma
2. ) buffy coat ( palettes + leukocytes )
3. ) erythrocytes

buffy coat + erythrocytes= formed elements

Question 7

how much of the blood is plasma?

Answer 7

55%

Question 8

what is plasma mostly made up of?>

Answer 8

90% water

8% plasma proteins

Question 9

what are some common reasons for decrease in albumin levels ?

Answer 9

1. ) liver failure ( decrease in formation

2. ) kidney disease ( increase in albumin loss in urine )

Question 10

what forms gamma globulins (antibodies)?

Answer 10

plasma cells