Soinc Anatomy

Functions of Nervous System
1. Sensory Function
2. transmit info to processing areas of the brain and spine
3. Integration Function
4. Motor Function

Sensory Function
Gathers information from both inside and outside the body

Integration Function
Processes the information in the brain and spine

Motor Function
Sends information to the muscles, glands, and organs so the can respond appropriately

Nervous System does…
The Nervous System controls and coordinates all essential functions of the body including all other body systems allowing the body to maintain homeostasis or its delicate balance

Divisions of the Nervous System
Central Nervous System CNS
Peripheral Nervous System PNS
Somatic Nervous System
Autonomic Nervous System
Sympathetic Nervous System
Parasympathetic Nervous System

Central Nervous System CNS consists of
Consist of the brain and spinal column

Peripheral Nervous System PNS consist of
Consist of the Muscles

Somatic Nervous System
voluntary Relays information to and from skin and skeletal muscles

Autonomic Nervous System
Involuntary relays information to internal organs

Sympathetic Nervous System controls
Controls Organs in times of stress

Parasympathetic Nervous System controls
Controls organs when body is at rest

Neuron
Basic function cell of nervous system
transmits impulses up to 250 mph

Parts of Neuron
Dendrite, Cell Body, Axon, Schwann Cells, Myelin Sheath, Node of Ranvier

Dendrite
Receives stimulus and carries its impulses towards the cell body

Cell Body
Nucleus and most of cytoplasm

Axon
Fiber which carries impulses away from cell body

Schwann Cells
Cells which produce myelin or fat layer in the Peripheral Nervous System

Myelin Sheath
Dense lipid layer which insulates the axon – makes the axon look gray

Node of Ranvier
gaps or nodes in the myelin sheath

Order in which impulses travel
from dendrite to cell body to axon

Three Types of Neurons
Sensory Neurons
Motor Neurons
Interneurons

Sensory Neurons
brings messages to CNS

Motor Neurons
carry messages from CNS

Interneurons
between sensory and motor neurons in the CNS

Central nervous system the brain and spinal cord collectively Synaptic cleft tiny gap that separates two neurons WE WILL WRITE A CUSTOM ESSAY SAMPLE ON ANY TOPIC SPECIFICALLY FOR YOU FOR ONLY $13.90/PAGE Write my sample Ganglion a bundle of …

Central nervous system the brain and spinal cord collectively Synaptic cleft tiny gap that separates two neurons WE WILL WRITE A CUSTOM ESSAY SAMPLE ON ANY TOPIC SPECIFICALLY FOR YOU FOR ONLY $13.90/PAGE Write my sample Ganglion a bundle of …

neuron a cell that is specialized to conduct nerve impulses neuroglia (glial cells) Cells of the central nervous system and peripheral nervous system that support and protect neurons; also called glial cells WE WILL WRITE A CUSTOM ESSAY SAMPLE ON …

Neurons A nerve cell; the basic building block of the nervous system. Nerve Impulses Electrical signals that convey information along a neuron. WE WILL WRITE A CUSTOM ESSAY SAMPLE ON ANY TOPIC SPECIFICALLY FOR YOU FOR ONLY $13.90/PAGE Write my …

Central Nervous System (CNS) Consists of the brain and spinal cord Peripheral Nervous System (PNS) Consists of all nerves and receptors that are not part of the brain or spinal cord. WE WILL WRITE A CUSTOM ESSAY SAMPLE ON ANY …

Central nervous system Nervous system subdivision that is composed of the brain and spinal cord. Somatic nervous system Subdivision of the PNS that controls voluntary activities such as the activation of skeletal muscles. WE WILL WRITE A CUSTOM ESSAY SAMPLE …

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