Homeostasis Flashcards
Portal system
To sets of capillaries in series
Vasa recta
Network of capillaries arouhd loop of Henle
Methods by which kideny controls reabsorption
Alter osmolarity of insterstitium and selective permeability of the tubule
Counterccurent multiplier system
System of gradients and flow used by kideny to alter reabsorption
Aldosterone
Increases sodium reabsorption in kidneys, therefore increasing water reabsorption. Secreted by adrenal glands in response to low BP.
ADH/Vasopressin
Makes collecting duct more permeable to water, therefore increasing water reabsorption. Secreted by hypothalamus, stored in pituitary, and secreted when blood osmolarity is high.
3 compounds absent from healthy urine
Blood, glucose, protein
Urea formation
Amine, from deamination of proteins, combined with CO2
Layers of skin
Epidermis, dermis, hypodermis
Regulates body temp
Hypothalamus