Multiple Choice -Homeostasis Flashcards
What is homeostasis
The physiological state of the body in which internal, physical and chemical conditions are kept within a range that is suitable for life processes
Excretion (Urine Process) What is it?
The elimination of waste products and foreign matter from the body. Maintains the ionic and osmotic equilibrium that is necessary for cell functions.
Nitrogen elimination (where)
The removal of wastes is from the excretory (urinary) system and it’s main organs are kidneys and the bladder. Kidneys filter out metabolites made by the liver and eliminate them from the body.
Nitrogen & Nitrogen Waste
- proteins are amino acids which contain a nitrogen atom bonded to two hydrogens called the amino group.
- during deamination (in liver) the amino group is removed and converted to ammonia. The ammonia is transported in diluted portions as it’s highly toxic.
What does ADH control?
- Helps control blood pressure by acting on the kidney and the blood vessels.
- Conserves the fluid volume of your body: reduces water in urine
The difference between glomerular filtrate & blood plasma
blood plasma contains suspended cells, proteins, and big molecules, but glomerular filtrate typically does not. Proteins cannot pass through the glomerular capillary membranes.
Types of Endocrine glands
hypothalamus: region of brain that releases hormones to control glands (maintains homeostasis)
pituitary: produces hormones
thyroid:lowers calcium concentration and increases metabolic rate.
adrenal medulla: contributes to bodies response to stress
adrenal cortex: helps control salt-water balance
pineal body:synchronizes the bodies biological clock day length (melatonin)
In an emergency situation what do glucose and glycogen
Glycogen converts to glucose for the body to use it for energy.
Action potential & the flow of sodium potassium ions
Sodium channels close at the peak of the action potential, while potassium continues to leave the cell
nervous system
The functional unit of the nervous system is the neuron. The neuron allows an organism to recieve and respond to both internal and external stimuli.
- The signaling process has four components reception (detection of stimulus), transmission (movement of message), integration (sorting), interpretation and deciding of response, & response (action/output).
Neural signaling involves three classes afferent (sensory) neuron, internet ron’s and efferent neuron
endocrine system
A system of glands located in various parts of the body.
The glands produce hormones and secrete them into the bloodstream.
