Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
13 Cards in this Set
- Front
- Back
|
Gross anatomy of nervous system
|
parts of brain you can see with naked eye
|
|
|
micro/cellular anatomy
|
parts of brain you see under microscope
|
|
|
Peripheral Nervous System (PNS) components
|
1. cranial nerves: directly connected to brain
2. spinal nerves: comes from spinal cord 3. autonomic nervous system (ANS): regulatory system that controls internal organs *all three communicate info to the CNS, which transmits commands to the body |
|
|
Central Nervous System (CNS) components
|
1. brain
2. spinal cord |
|
|
Terms for bundle of axons in PNS vs. CNS
|
PNS: a "nerve"
CNS: a "tract" |
|
|
Terms for group of neurons in a cluster in PNS vs. CNS
|
PNS: a "ganglion"
CNS: a "nucleolus" |
|
|
PNS Cranial Nerves
|
- 12 of them
- serve as sensory and motor system of head and neck - sensory: Olfactory (sense of smell) Optic (vision) Vestibulocochlear (balance and hearing) - motor Oculomotor (eye musculature) Trochlear (eye musculature) Abducens (eye musculature) Accessory (neck musculature) Hypoglossal (tongue) - both sensory and motor: Trigeminal (chewing) Facial (face) Glossopharyngeal (pharynx and tongue) Vagus (viscera) |
|
|
PNS Spinal Nerves
|
- 31 of them
- pairs along length of spinal cord - each spinal nerve has two roots: dorsal (back, sensory projections from body to spinal cord) and ventral (front, motor projections from spinal cord to muscles) - spinal sections: • Cervical (8) • Thoracic (12) • Lumbar (5) • Sacral (5) • Coccygeal (1) - dermatomes: area of skin where that place on spinal cord innervates (gives feeling) i.e., you feel arm pain when heart attack |
|
|
Autonomic Nervous System (ANS) components
|
- all autonomous (involuntary)
1. sympathetic nervous system: fight or flight, arises from thoracic and lumbar areas. uses mostly norepinephrine. 2. parasympathetic nervous system: prepares body for rest, arises from cranial and sacral areas, uses acetylcholine 3. enteric nervous system: regulates function of gut and digestion |
|
|
Anatomical Orientations: Horizontal vs. Sagittal vs. Coronal
|
Horizonal: divides top and bottom
Sagittal: divides left and right Coronal: divides front and back |
|
|
White matter
|
covered by myelin, white fatty tissue. axons and nerve tracks. inside of brain
|
|
|
Grey matter
|
not covered by myelin. cell bodies. outside of brain
|
|
|
Gyrus vs. sulcus/fissure
|
gyrus = ridge of brain, sulcus = furrow. fissure is a deep sulcus
* gyro makes you up and happy, sulking is being down |
