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Nervous System
Chapter 9, Nervous System
33
Anatomy
Undergraduate 1
03/07/2017

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Term
General Functions of the Brain
Definition
Sensory - receptors detect internal and external changes
Integrative - collects information (makes decisions)
Motor Function - stimulates motor response
Term
Central Nervous System consists of what?
Definition
Brain and Spinal cord
Term
Peripheral Nervous System consist of what?
Definition
Cranial nerves and Spinal nerves
Term
What is in a Neuron Structure
Definition
Cell Body, Dendrites, Axon, Myelin, Neurilemma
Term
Neurological Cells of the CNS
Definition
Microglial cells, Oligodendrocytes, Ependymal, Astrocytes
Term
Parts of Brain
Definition
cerebrum, diencephalon, brainstem, cerebellum
Term
corpus callosum
Definition
connects the cerebral hemispheres
Term
Lobes of cerebral hemisphere
Definition
frontal, parietal, temporal, occipital
Term
cerebrum functions
Definition
interpretation of sensory inut, initiates voluntary movement, memory, reason, intelligence, personality
Term
Diencephalon
Definition
Thalamus and hypothalamus
Term
Parasympathetic Division
Definition
normal functions, normal conditions neurotransmitter=acetylcholine
Term
Sympathetic Division
Definition
stressful, emergency situations; neurotransmitter=norepinephrine
Term
Spinal Nerves
Definition
31 pair
mixed nerves
dorsal root=sensory
ventral root=motor
Term
Cranial Nerves
Definition
12 pair
most are mixed nerves (sensory and motor)
some are somatic and some are autonomic
Term
Somatic
Definition
conscious effort
Term
autonomic
Definition
Involuntary
Term
Cerebellum
Definition
contains 2 hemispheres
*reflex center for integrating sensory information for skeletal muscle movements
*Body posture
Term
Medulla Oblongata
Definition
*transmits all ascending and descending impulses
*holds vital centers such as cardiac, respiratory, blood pressure
Term
Pons
Definition
*relay to cerebrum
*regulates rate and depth of breathing
Term
Midbrain
Definition
*between diencephalon and pons
*bundles of nerve fibers
*reflex center for eye and head
Term
Thalamus
Definition
Central relay station for sensory input
Term
Hypothalamus
Definition
regulates heart rate and BP
body temp, hunger, hormones, sleep
Term
Optic Tracts
Definition
Optic nerves cross here
Term
Limbic System
Definition
emotion, expression - pineal gland and mammillary bodies
Term
Cerebrum Function
Definition
Higher brain function
Interpretation of sensory input
initiates voluntary movement
memory, reasoning, intelligence, personality
Term
Cerebral Cortex
Definition
outside layer of brain, grey matter, integration takes place
Term
cerebral medulla
Definition
inside layer of brain, white matter, connects to other parts of brain
Term
Menienges
Definition
Dura Mater, Arachnoid Mater, Pia Mater, Subarachnoid space, Cerebrospinal Fluid
Term
Dura Mater
Definition
outermost layer - attached to the skull (Meninges)
Term
Arachnoid Mater
Definition
middle layer - (Meninges)
Term
Pia Mater
Definition
innermost membrane - clings to the surface of the brain and spinal cord (meninges)
Term
subarachnoid space
Definition
space between arachnoid mater and pia mater filled with cerebrospinal fluid
Term
Cerebrospinal Fluid
Definition
protective watery cushion around brain and spinal cord
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