Brain has 4 regions - 1. Cerebrum
2. Diencephalon
3. Brainstem
4. Cerebellum
Brain hemisphere - 1. Frontal
2. Parietal
3. Temporal
4. Occipatal
Neurons - Interconnecting nerve cells, consisting of cell bodies
Axons - Single long fibers conduct impulses to other parts of nervous system
Bas...
Neurons - Interconnecting nerve cells, consisting of cell bodies
Axons - Single long fibers conduct impulses to other parts of nervous system
Basal Ganglia (deep in brain) - Affects movement
Thalamus - Process sensory impulses
Hypothalamus - Maintains homeostasis & temperature regulation, HR, BP
Affects endocrine system
Governs emotional behaviors e.g. anger, sexual drive
Hormones act directly on pituitary gland structures in diencephalon
Gray matter - Aggregations neuronal cell bodies.
Rims surfaces of cerebral hemispheres = forms cerebral cortex
White matter - neuronal axons coated w myelin (white color), allow
nerve impulses to rapidly travel
Consciousness - interactions between intact cerebral hemispheres & reticular activating
(arousal) system in (*diencephalon & upper brainstem*)
Identify the following...
cerebellum
occipital lobe
parietal lobe
corpus callosum
frontal lobe
midbrain
pons
medulla -
Identify the following...
cerebellum
occipital lobe
wernicke's area
Cerebellum - Base of brain; *coordinates all movement*, helps maintain
*body upright in space*
Lumbar puncture - L3-L4 or L4-L5 vertebral interspaces to avoid spinal cord injuries
Cauda equina. - Fan out like a horse's tail at L1-L2, where spinal cord terminates
Spinal cord - Contains: grey matter (aggregations of nerve cell nuclei & dentrites) and
white matter *connect to brain to PNS*
Cord provides: segmental relays with the periphery, servings as a conduit for info flow to
and from brain. Motor and sensory nerve pathways enter/exit through posterior/anterior
nerve roots and spinal & pheripheral nerves.
How many pairs of spinal nerves?
Cervical?
Thoracic?
Lumbar
Sacral?
Coccygeal? - 31 pairs
8 cervical
12 thoracic
5 lumbar
5 sacral
1 coccygeal
Peripheral nervous system (PNS) - CNS & peripheral nerves. project to heart, visceral
organs, skin, & limbs
Pheripheral nerves includes - *Spinal and pheripheral nerves* carry impulses to and
from spinal cord
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller angelinas. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
