Medical Studies > EXAM > MEDICAL-SURGICAL NURSING STUDY GUIDE NOTES 2023 (All)

MEDICAL-SURGICAL NURSING STUDY GUIDE NOTES 2023

Document Content and Description Below

By: Anthony T. Villegas R.N. Overview of structures and functions: NERVOUS SYSTEM • The functional unit of the nervous system is the nerve cells or neurons • The nervous system is composed... of the ff: Central Nervous System • Brain • Spinal Cord – serves as a connecting link between the brain & the periphery. Peripheral Nervous System • Cranial Nerves –12 pairs; carry impulses to & from the brain. • Spinal Nerves – 31 pairs; carry impulses to & from spinal cord. Autonomic Nervous System ➢ subdivision of the PNS that automatically controls body function such as breathing & heart beat. ➢ Special senses of vision and hearing are also covered in this section • Sympathetic nervous system – generally accelerate some body functions in response to stress. • Parasympathetic nervous system – controls normal body functioning. • Not capable of regeneration. • Myocardial cells, Neurons, Bone cells, Osteocytes, Retinal Cells. B. NEUROGLIA • Support and protection of neurons. TYPES 1. Astrocytes • maintains blood brain barrier semi-permiable. • majority of brain tumors (90%) arises from called astrocytoma. • integrity of blood brain barrier. 2. Oligodendria • produces myelin sheath in CNS. • act as insulator and facilitates rapid nerve impulse transmission. 3. Microglia • stationary cells that carry on phagocytosis (engulfing of bacteria or cellular debris, eating), pinocytosis (cell drinking). 4. Epindymal • secretes a glue called chemo attractants that concentrate the bacteria. MACROPHAGE ORGAN CELLS A. NEURONS • Primary component of nervous system • Composed of cell body (gray matter), axon, and dendrites • Basic cells for nerve impulse and conduction. Axon • Elongated process or fiber extending from the cell body Microglia Monocytes Kupffers Histiocytes Alveolar Macrophage Central Nervous System Composition Of Brain Brain Blood Kidney Skin Lung • Transmits impulses (messages) away from the cell body to dendrites or directly to the cell bodies of other neurons • Neurons usually has only one axon Dendrites • Short, blanching fibers that receives impulses and conducts them toward the nerve cell body. • Neurons may have many dendrites. Synapse • Junction between neurons where an impulse is transmitted Neurotransmitter [Show More]

Last updated: 2 years ago

Preview 1 out of 64 pages

Buy Now

Instant download

We Accept:

We Accept
document-preview

Buy this document to get the full access instantly

Instant Download Access after purchase

Buy Now

Instant download

We Accept:

We Accept

Reviews( 0 )

$10.00

Buy Now

We Accept:

We Accept

Instant download

Can't find what you want? Try our AI powered Search

43
0

Document information


Connected school, study & course


About the document


Uploaded On

Mar 22, 2023

Number of pages

64

Written in

Seller


seller-icon
CLAVIN

Member since 2 years

13 Documents Sold

Reviews Received
1
0
0
0
0
Additional information

This document has been written for:

Uploaded

Mar 22, 2023

Downloads

 0

Views

 43

Document Keyword Tags

Recommended For You

Get more on EXAM »

$10.00
What is Scholarfriends

In Scholarfriends, a student can earn by offering help to other student. Students can help other students with materials by upploading their notes and earn money.

We are here to help

We're available through e-mail, Twitter, Facebook, and live chat.
 FAQ
 Questions? Leave a message!

Follow us on
 Twitter

Copyright © Scholarfriends · High quality services·