Nerves Flashcards
Contains unmyelinated axons
Gray matter
Contains myelinated axons
White matter
How many pairs of nerves are there?
31 pairs of nerves
What are the 4 major plexuses?
- Cervical plexus
- Brachial plexus
- Lumbar plexus
- Sacral plexus
Largest region of the brain where conscious thought and all intellectual functions originate.
Cerebrum
Elevated ridges which increase the surface area of the cerebral cortex.
Gyri
Shallow depressions in the brain.
Sulci
Deeper grooves in the brain.
Fissures
In the cerebrum is found in the cerebral cortex and in the basal nuclei
Gray matter
Lies under the cerebral cortex and surrounds the basal nuclei
White matter
Left or right side are called______
Hemispheres
Divides the left and right hemishperes
Longitudinal fissure
Primary cortex that voluntarily controls skeletal muscles, cognition, reasoning, and logic.
Frontal lobe
Primary sensory cortex that controls the conscious perception of touch, pressure, vibration, pain, temperature, and taste.
Parietal lobe
Visual cortex that controls the conscious perception of visual stimulus
Occipital lobe
Auditory cortex and olfactory cortex that control the conscious perception of auditory and olfactory stimuli.
Temporal lobe
Endocrine gland that releases nine hormones.
Pituitary gland
Stalk that connects the pituitary gland to the hypothalamus
Infundibulum
Prominent areas that process sensory information including olfactory sensations and control reflex movements associated with eating (chewing, licking, and sucking)
Mammillary bodies
Area where the optic nerves cross before entering the brain.
Optic Chiasm
Prominent structures associated with the hypothalamus are: 4
- Pituitary gland
- Infundibulum
- Mammillary bodies
- Optic Chiasm
Second largest portion of the brain
Cerebellum
Regulates posture and balance
Cerebellum
Compares the intended and actual movements to refine learned movement patterns
Cerebellum
Includes the medulla oblongata, pons, and midbrain (mesenchephalon)
Brainstem
Which cranial nerves control movement of the eye?
- Oculomotor (3)
- Trochlear (4)
- Abducens (6)
