Term II 45 points Flashcards
urea
produced in liver during degradation of amino acids
co2
dissolves in the plasma and tissue fluid and form H2CO3 (carbonic acid)
CHEM FORMUla
salts
can be in excess in the diet
→effect of water concentratiom of the blood
nervous system and endocrine system
2 organs that assure coordination of organs, tissue, cells and maintain the inner condition
glomerulus structure and function
structure: network of capillaries transporting blood, Bowman’s capsule
→enlarged head of the nephron which collects the filtered fluid
function: ultrafiltration (non specific filtration of the blood under high (Blood) pressure: water, salts, urea, glucose, small proteins)
small proteins
- water
- salts
- urea
- glucose
- small proteins
renal tube st. and func.
structure: long narrow folded tube
function: selective reabsorption
collecting duct st and func
structure: last part of long, twisted tube
function: collects urine and moves it into the ureter
organ: Eye
location of receptors: Retina
stimulus: Light
sense: Vision
organ: Nose
location of receptors: Mucosa
stimulus: Chemicals
sense: Smell
organ: Tongue
location of receptors: Buds
stimulus: Chemicals
sense: Taste
organ: Ear
location of receptors: Cochlea, semi-curicular canals
stimulus: Vibrations accelaration
sense: Hearing equilibrium
organ: Skin
location of receptors: Dermis
stimulus: Temperature
sense: Thermoreceptors
The iris controls the size of the pupil by…
- dilation (expansion)
- contraction (constriction)
of muscle cells
→ determines how much light reaches the retina
transparent media in eye
Light can pass through
- cornea
- anterior chamber
- vitreous chamber
- lens
(- retina)
non transparent media in eye
light cant pass through
transparent media and the differences of how light passes through them
- cornea and lens = light refraction (change of direction of a wave passing from one media to another)
- aqueous and vitreous chamber = no refraction
- conjuctiva = no light passage
cones
number : 7 million
different types: 3 (blue, green, red)
vision: colours
light sensitivity: low (activation at high light intensity)
location on the retina: contre of retina (fovea)
image generation: clear and coloured
rods
number: 100 million
diff types: type
vision: black and white
light sensitivity: great sensitivity (activation at low light)
location: edge of the retina
image generation: blurred and colourless
two structures that refract light
cornea, lens
