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Ch. 4 Study Stack
| Term | Definition |
|---|---|
| Central Nervous System (CNS) | brain and spinal cord |
| brain | portion of the central nervous system contained within the cranium |
| Cerebrum | largest portion of the brain and initiates and coordinates movement and regulates temperature |
| Frontal lobe | responsible for voluntary muscle movement and personality |
| parietal lobe | responsible for sensations such as pain, temperature, and touch |
| temporal lobe | responsible for hearing, taste and smell |
| occipital lobe | responsible for vision |
| cerebral cortex | responsible for higher mental functions |
| thalamus | responsible for relaying sensory information to the cortex |
| diencephalon | responsible for directing sensory information to the cortex |
| gyri | convulsions (mounds) of the cerebral hemispheres |
| sulci | shallow groves that separate gyri |
| fissures | deep grooves in the brain |
| cerebellum | responsible for control and coordination of skeletal muscles |
| Brainstem | responsible for breathing, heart rate, and body temperature |
| Ventricles | series of interconnected cavities |
| cerebrospinal fluid (CSF) | plasma-like clear fluid circulating in and around the brain and spinal cord |
| spinal cord | responsible for nerve conduction to and from the brain and body |
| meninges | three membranes that cover the brain and spinal cord |
| Peripheral Nervous System (PNS) | nerves that branch from the central nervous system including nerves of the brain (cranial nerves) and spinal cord (spinal nerves) |
| cranial nerves | 12 pairs of nerves arising from the brain |
| spinal nerves | 31 pairs of nerves arising from the spinal cord |
| sensory nerves | nerves that conduct impulses from body parts and carry sensory information to the brain |
| motor nerves | nerves that conduct motor impulses from the brain to muscles and glands |
| autonomic nervous system (ANS) | nerves that carry involuntary impulses to smooth muscle, cardiac muscle, and various glands |
| Hypothalamus | control center for the autonomic nervous system located near the pituitary gland |
| sympathetic nervous system | division of the autonomic nervous system that is concerned primarily with preparing the body in stressful or emergency situations |
| parasympathetic nervous system | it counterbalances the effects of the sympathetic system by restoring the body to a restful state after a stressful experience |
| obsessive-compulsive disorder (OCD) | an anxiety disorder featuring unwanted, senseless obsessions accompanied by repeated compulsions |
| hypochondriasis | a preoccupation with thoughts of disease and concern that one is suffering from a serious condition that persists despite medical reassurance to the contrary |
Created by:
sheerinmansoor
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