Vision
What are the two types of photoreceptors? Where are they concentrated?
Rods- peripheral retina
Cones- Fovea
What are the effects of orexins on eating habits? where are they produced?
increase eating, lateral hypothalamus
What is an endotherm?
What is an ectoderm?
Endotherm (mammals, birds) can maintain body temp through internal metabolic activity.
Ectoderm (amphibians, fish, reptiles) rely on external factors (sun, shade)
What ions are in a higher concentration in the intracellular fluid? What about in the extracellular fluid?
Inside- K
outside- Na and Cl
What hormone is produced and secreted by fat cells?
Leptin
What does the cornea receive nutrients from?
the aqueous humor
the inferior temporal gyrus (area IT)
What kind of drugs can trigger hyperthermia?
Stimulants, antidepressants
A solute that has broken into ions
What are the roles of NPY and AgRP?
To start feeding behavior
Where does the ventral stream project to? what is its role?
temporal lobe, object recognition
Where does the dorsal stream project to? What is its role?
the parietal lobe, analysis of movement
Why would hypothermia be induced?
Osmotic thirst -- cellular dehydration
hypovolemic -- drop in blood volume
What hormone is released after large quantities of fat are consumed?
CCK
Where does the dorsal stream project to? What is its role?
the parietal lobe, analysis of movement
If light hits the center of an on center off surround receptive field, what would be the response of the bipolar cell?
depolarization
Hypothalamus
Activity of osmoreceptors and basoreceptors stimulate the release of what hormone?
Antidiuretic hormone (adh) or vasopressin
What two hormone regulate the body's energy?
glucagon and insulin
How many layer are in the LGN? what types of cells are in each?
6.
1,2= magnocellular
3,4,5,6= parvocellular
in between= koniocellular
If light hits an entire on center off surround receptive field, what would be the response of the bipolar cell?
What is the role of the POA?
coordinates info from thermoreceptors and triggers responses such as panting, sweating
What are the two major effects of ADH on the kidneys?
1) reduce urine production
2) release of renin (ultimately constricts blood vessels)
The release of NPY and AgRP suppress the release of which two hormones?
TSH, ACTH