Keeping The Body Alive Flashcards
The skin layers
Epidermis
Dermis
Hypodermis
Life processes
Mrs gren
7 Nutrition Excretion Movement Growth+development Respiration Stimuli response Reproduction Controlling their internal environment
Epidermis
Hair
Pore
Dermis
Hair erector muscle Oil gland Sweat gland Pain receptor Temperature receptor Pressure receptor Capillary loop
Hypodermis
Fat layer
Body temperature
37*C for the enzymes to work properly
How is body temperature kept constant
Sweat evaporates front he surface of your skin
You flush and lose heat by radiation through your skin
ADH and osmoregulation
Solute of concentration up/down
Detected in hypothalamus
Pituitary gland releases more ADH
ADH travels to kidney tubules
More/less water reabsorbed into blood
Small/large amount of of concentrated wine formed
Blood concentration of so lutes restored to normal
ADH production falls to normal/arises again
Kidneys
Excretes urea
Urine, sweating, breathing out, faeces remove too much water
Kidney functions
Balances the amount of water left in the blood
You take in mineral ions with your food these are lost in sweat
Removed in urine
Osmoregulation
The balance of water and mineral ions
Homeostasis
Keeping conditions inside the body constant
Changing them when the environment changes
How is homeostasis made possible
By excretion
Carbon dioxide produced
During respiration
Urea produced
When amino acids are broken down