The Nervous System Anatomy

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy
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.

Peripheral nervous system
Nervous system subdivision that is composed of the cranial and spinal nerves and ganglia.

Autonomic nervous system
Subdivision of the PNS that regulates the activity of the heart and smoot muscle, and of glands; it is also called the involuntary nervous system.

Central nervous system
A major subdivision of the nervous system that interprets incoming information and issues orders.

Peripheral nervous system
A major subdivision of the nervous system that serves as communication lines, linking all parts of the body to the CNS.

Neurons
Demonstrate irritability and conductivity, and thus transmit electrical message from one area of the body to another area.

Dendrite
Branches part of neuron receives impulses from other neurons. Conducts electrical currents toward the cell body.

Myelin sheath
Increases the speed of impulse transmission.

Cell body
Location of the nucleus.

Axon
Generally conduct impulses away from the cell body.

Cutaneous sense organs
Sensory receptors found in the skin, which are specialized to detect temperature, pressure changes, and pain.

Synapse
the spaces across which nerve impulses travel

Efferent neuron
Neuron that conducts impulses away from the CNS to muscles and glands.

Stimulus
A change in the environment

Afferent neuron
Neurons that send information from sensory receptors (ex: eyes, nose) toward the CNS

Neurotransmitters
Chemicals released by neurons that stimulate other neurons, muscles, or glands.

Hypothalamus
Site of regulation of water balance and body temperature.

Pons
Contains reflex centers involved in regulating respiratory rhythm in conjunction with lower brain-stem centers.

Cerebellum
Responsible for the coordination of muscles and is the center of balance

Thalamus
Important relay station for afferent fibers traveling to the sensory cortex for interpretation.

Medulla oblongata
Part of the brainstem that controls vital life-sustaining functions such as heartbeat, breathing, blood pressure, and digestion.

Corpus callosum
Large fiber tract connecting the cerebral hemispheres.

Thalamus
Receives messages from sensory receptors and relays info to proper regions of cerebrum

Choroid plexus
Forms the cerebrospinal fluid.

Hypothalamus
A neural structure lying below the thalamus; directs eating, drinking, body temperature; helps govern the endocrine system via the pituitary gland, and is linked to emotion

Dura mater
Outermost covering of the brain, composed of tough fibrous connective tissue.

Pia mater
Innermost covering of the brain; delicate and vascular.

Arachnoid mater
Middle meningeal later; like a cobweb in structure.

Cerebrospinal fluid
clear watery liquid separating the middle and inner layers of the brain.

Cyton
Cell body. Impulses pass through here to the axon.

Interneurons
send information between sensory neurons and motor neurons

Reflex arc
the pathway that an impulse follows to illicit a response to a stimulus

Cerebrum
Largest part of the brain. Divided into lobes.

Frontal lobe
Speech, control of emotions

Temporal lobe
Smell, hearing

Occipital lobe
vision

Parietal lobe
speech, taste and reading

Spinal cord
extension of the brain stem. Bundles of neurons that carry impulses from all parts of the body to the brain and from the brain to all parts of your body.

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy Neurons A nerve cell; the basic building block of the nervous system. Nerve Impulses Electrical signals that convey information …

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy Autonomic Nervous System Subdivision of the PNS that regulates the activity of the heart and smooth muscle, and of …

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy 2 major categories of human nervous system Central Nervous System – CNS Peripheral Nervous System – PNS 2 components …

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy List the three major functions of the nervous system. 1) Sensations (sensory input) 2) Interpretation (Integration of info) 3) …

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy Central Nervous System Consists of brain and spinal cord Peripheral Nervous System Consists of nerves extending from the spinal …

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy Central Nervous System brain and spinal cord Periperal Nervous System All parts of the nervous system except for the …

David from Healtheappointments:

Hi there, would you like to get such a paper? How about receiving a customized one? Check it out https://goo.gl/chNgQy