Functions of the nervous system Flashcards
- The ______ _________, with the brain as its center, coordinates and controls all bodily activities
- when the brain ceases to function, the body is no longer able to live on its own
Nervous system
The nervous system is divided into two primary parts, what are they?
Central and peripheral nervous system
Central Nervous system includes what?
brain and spinal cord
Includes the 12 pairs of cranial nerves and 31 pairs of peripheral spinal nerves extending outward from the spinal cord
peripheral Nervous system
One or more bundles of neurons that connect the brain and spinal cord with other parts of the body
Nerves
The basic cells of the nervous system that allow different parts of the body to communicate with each other
neurons
Chemical substances that make it possible for messages to cross from the synapse of a neuron to target receptors
Neurotransmitters
Dopamine, endorphins, serotonin, norepinephrine are examples of what?
neurotransmitters
System of membranes that enclose the brain and spinal cord
Meninges
- clear, colorless, watery fluid that flows throughout the brain and around the spinal cord
- cools and cushion the organs from shock or injury
- Nourish the brain and spinal cord by transporting nutrients to these tissues
Cerebrospinal Fluid
- Largest upper most portion of the brain
- Responsible for all thought, judgment, memory and emotion
Cerebrum
- located below the cerebrum
- produces sensation
Thalamus
Located below the thalamus
hypothalamus
*second largest part of the brain
* located at the back of the head below the posterior portion of the cerebrum
Cerebellum
Stalk like portion of the brain that connects the cerebral hemisphere with the spinal cord
brainstem
Long, fragile, tube-like, structure that begins at the end of the brainstem and continues down almost to the bottom of the spinal column
Spinal cord
- regulates and integrates the automatic nervous system, including controlling heart rate, blood pressure, respiratory, and digestive tract activity
- regulates emotional responses, including fear and pleasure
- regulates body temperature
- regulates food intake by controlling hunger sensations
- regulates water balance by controlling thirst sensations
*.controls sleep-wakefulness cycles - regulates the pituitary gland and endocrine system activity
What are the regulatory functions of the hypothalamus?