Muscle Tissue and Nervous Tissue | Western Sydney University - Edubirdie

University:
Western Sydney University
Course:
MEDI 2003 | Clinical Sciences 2
Academic year:

2024
Views:

454

Pages:

3
Author:

Mariam A. A.

Muscle tissue and Nervous Tissue ● ● ● Function is to contract Can be striated (skeletal, cardiac) or smooth Muscle cells are also known as myocytes Striated muscle cells Skeletal muscle ○ ○ ○ ○ Multinucleate Long cells arranged in parallel Allows body movement Voluntary control ○ ○ Uninucleate Short, branched cells broken up by intercalated discs → multiple cardiac cells are joined up at this disc Only found in the heart and allows heart contractions Involuntary control Cardiac muscle ○ ○ Smooth muscle ○ ○ ○ ○ ○ No striations Flattened and extended cell shape Oval nucleus Involuntary control In organs and vessels that need to propel substances e.g. ducts of glands, stomach, intestines, blood vessels ○ There's neurons and neuroglial cells ■ Neurons = send and receive nerve impulses, have axon, cellular communications ■ Glial cells = no axon, support for neurons, maintain homeostasis ■ ECM has very few proteins but lots of neuroglial cells (dots throughout the ECM) for maintaining the position of the nerve cell in place and to speed up transmission of signal that is received or transported to another cell Located all throughout the CNS and PNS Communication and coordination of body systems (to maintain homeostasis) Nervous tissue ○ ○ ○ ○ Dendrite = receives the info from the axon of other neurons (more, branching and thick arms) Axon = sends the info from cell body to target (A for Away, long single thin arms)

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