Functional organization Of The Human Body

Question 1

Difference btw growth and development

Answer 1

Growth- increase in size or no. of cells
Development- cells have a specialized function

Question 2

3 body fluids

Answer 2

ICF
ECF (interstitial & plasma)
Transcellular (specialized type of ECF e.g CSF, synovial intraocular spaces)

Question 3

Total body fluids calculations

Answer 3

ICF: 2/3
ECF: 1/3»»»>interstitial: 3/4»»>plasma:1/4

Question 4

ECF transportation through the body

Answer 4

Via blood vessels
Via blood capillaries

Question 5

Osmolarity

Answer 5

Total concentration of solutes

Question 6

Surplus of water

Answer 6

Decreases plasma osmolarity

Question 7

Negative feedback

Answer 7

Sympathetic

Question 8

Positive feedback on blood loss

Answer 8

Vascular constriction
Platelets are attracted to the site of clot
Positive feedback accelerates this until:
-Fibrous tissue grows and close the hole permanently in the vessel and bleeding stops

Question 9

Positive feedback control blood clot formation

Answer 9

Clot formation countinues until the raptured blood vessel is plugged and bleeding stops bleeding and

Question 10

Positive feedback on childbirth

Answer 10

Uterine contractions push the baby’s head to the cervix
Stretching of the cervix send signals to uterine muscles back to the body for more powerful contractions

Question 11

Positive feedback on generation of nerve signals

Answer 11

Leak of sodium ions through sodium channels
Influx of sodium changes the MP, causing opening of more channels

Question 12

Development of diseases

Answer 12

Death of pancreatic B cells lead to insulin deficiency a
-Type 1 diabete > high glucose level
- Hypertension > cardiac failure
-Nephrotic syndrome