Module 4.4 Nervous System A&P Flashcards
Define neurology
study of the nervous system
Functions of the nervous system
coordinating all the activities of the body
- received info from sensory receptors
- coordinates activities to muscles, organs & glands
Define neurologist
physician that specializes in the diagnosis and tx of the medical conditions of the nervous system
Define neurosurgeon
physician that can operate on the organs of the nervous system
What does the central nervous system CNS include
spinal cord & brain
Function peripheral nervous system
connects the CNS to the rest of the body
What are the 3 meninges called
dura mater, arachnoid mater, cerebrospinal fluid
Function of cerebrospinal fluid
- produced by ventricles in the brain
- cushions the brain & spinal
- helps to protect these structures from shock
Define brain
- made up millions of nerve cells
- largest collection of nervous tissue
- shows cerebrum, cerebellum, diencephalon & brain stem
Define cerebrum
- largest part of the brain
- contains nerve centers that control all sensory & motor activity, memories, consciousness, emotions, & voluntary movements.
Define cerebellum
helps coordinate sensory perception & motor output
Define peripheral nervous system PNS
- contains nerves from the brain & spinal cord that innervate the rest of the body
Define thalamus
- relay center for incoming sensory & motor impulses
- sends messages to cerebrum
Define hypothalamus
- regulates the autonomic nervous system, which controls involuntary body functions
- connects the endocrine & nervous system
Define spinal cord
- protected by vertebrae
- conducts sensory impulses from the PNS to the brain then motor impulses from the brain to the spinal nerves
- processes the body’s reflexes