Anatomy & Physiology Flashcards
Action potentials are generated by the opening of___gated channels and occur on the____
voltage-gated
axon
A nerve impusle travels fasted along____axons of _______diameter
-Myelinated
-large (because of surface area)
Myelinated
is important for speed
You are in the dark room and someone comes in and turns on all the lights. Pupils get smaller. This is an example of what nervous system?
Autonomic - Everything that we don’t really have control over
Cerebral Spinal Fluid
the liquid that nourishes the brain and spinal cord.
-helps reduce the effective weight of the brain
provides a liquid cushion to protect the brain from sudden movements
Which is not a function of CSF
- CSF helps to promote mitosis within the neural tissue
THe brain stem
Medulla oblongata- heart rate
Pons- relays nerve impulses from cerebrum to crebellum
Midbrain- Motor and sensory impulse (to move you hand from stove. Up and down spinal cord
coordination
diencephlon
Hypothalamus
Hormones
Epithalmus
pineal gland secreted melatonin
Protection of the brain
cranial bone
menegies 3 layers, know inner outer
CSF
Olfactory 1
smell
Optic 3
vision/sight
Ocuulomotor
Movement of eyeballs and upper eye lid
Simple squamous Epithelium
simple diffusion and filtration.
Single laye of flat cells
Cilia
Hairs that beat.
As result of beating helps you to cough.
Beat when exposed to something
Endocrine
direct diffusion of hormones into bloodstream
Exocrine
will go to the surface of our lining. have ducts
sebaceous glands
sweat glands.
Ecrine- found everywhere
adocrine- everywhere else, groin, armpits, sexual regions
Sebum
lubricates skin and helps fight bacteria
osteroblast
building bone
Osteoclast
remodelling or breaking down
Osteocystes
mature bone cell
Osteiod
bone cells waiting to become bone
Rise in calcium levels
Thyroid gland produces calcitonin and it is deposited into bone
Calcium levels drop
The thyroid gland goes to the parathyroid glands to secrete PTH and then we perform osteoclasts and get homeostasis
