Flashcards in Week 1 Deck (89):
atoms formed together
Molecules formed together
Organelles formed together
Same type of cell formed together
Made up of tissue
Made up of organs working together
Maintenance of relatively stable internal conditions despite exterior environment.
Negative feedback system
reverses response; if body temp drops to 36 degrees, body shivers then REVERSES back to 37 degrees.
Positive feedback system
enhances the original stimulus; blood vessel cut on the thumb, cells come to the area to form a plug to stop bleeding.
study of medicine, how we use it and the effect on the body.
medicine that has physiology impact on tissue cells
desirable and beneficial outcome, consequence of medicine
stimulates immune system
take more than one drug that may interfere with another and worsen the condition
continually consuming drugs
constantly needing drug to function
dose of drug
achieves desired effect without harm
drug goes into blood and becomes available to all tissue cells
decreases response of dose of drug
drug that blocks receptor to activate
drug that initiates receptor to activate
how drugs work
drug molecule must inflict on the cell to produce a pharmacological response, either mimic or block.
mimic chemicals that are already in body eg, contraceptive pill
block drug chemical reaction
under tongue, rapid absorption to bloodstream
when drug tastes horrible
can administer large amount of drug, fast absorption
directly into blood
if someone has asthma, like taking a puffer
desired effect of a medical treatment, only give dose of drugs between therapeutic range
what body does to the drugs
absorption through small intestine, distribution throughout body, metabolised, excreted.
Factors affecting ADME
solubility of drug, surface are (more = quicker absorption), size of drug, blood flow
study of tissues
first pass effect
concentration of drug is reduced if it goes through liver, so if drug is necessary in strong doses, oral consumption should be avoided. Liver can not metabolise drug if taken through IV, interskeletal or rectal.
drug dose determined by....
age, weight, height, gender, other medications
toward head or upper body
toward lower part of body
closer to the centre of the body
away from the centre of the body
between medial and lateral
closer to the point of attachment to trunk of body
further from the point of attachment to trunk of body
toward or at the body surface (close to skin)
away from body surface, internal.
anterior surface of elbow
anterior body trunk
where thigh meets body trunk
lateral surface of body from rib cage to the hip
shoulder blade area
area of back between ribs and hips
posterior surface of lower leg
curve of shoulder formed by large deltoid muscle
buttocks or rump
posterior surface of head
divides the body into anterior and posterior
divides the body into left and right
divides body into superior and inferior
dorsal body cavity
includes cranial and spinal cavity
ventral body cavity
includes thoracic, abdominal and pelvic cavity
bladder, rectum, reproductive organs
digests food through mouth, oesophagus, stomach, small intestine and large intestine. gets excreted through pooooo
transports nutrients, blood cells, fluids, dissolved gases and wastes around the body.
functions in external respiration to absorb oxygen. Regulation of body's acid-base balance.
Frames body, supports it. Provides attachment and lever systems for muscles and acts in locomotion.
functions are based on 3 different cells; skeletal, cardiac and smooth muscle.
by way of kidney function, rids body of waste and maintains water balance.
nerves are special cells adapted for transmitting electro/chemical messages.
produces hormones in various glands of internal secretion and works with other systems.
sub-system of cardiovascular, collect and return intestinal fluid. maintain body fluid balance.