Flashcards
The Nervous System: An Overview
Cards in this deck (41)
- 1CNScentral nervous system (encased by bone)
- brain, spinal cord - 2PNSperipheral nervous system (everything else)
- Somatic system
- Visceral system (autonomic nervous system) -> (parasympathetic, sympathetic) - 3What is the somatic nervous system?Spinal nerves
Voluntary action - 4What is the visceral system? What are the tw categories?Autonomic nervous system (involuntary action) - Internal organ function
Two categories:
1. Parasympathetic: post-stress recovery
2. Sympathetic: getting ready for stress - 5Views of the brain: DORSALbird's eye view
- 6Views of the brain: VENTRALfrom below
- 7Views of the brain: LATERALside view
- 8Views of the brain: MEDIAL (midline)cut in half
- 9—1. dorsal
2. ventral
3. lateral
4. medial - 10AnteriorRostral
ahead/front - 11PosteriorCaudal
Behind/towards the back - 12DorsalBack
- 13Ventralfront or belly
- 14Midlinethe central axis
- 15Medialtowards the middle or midline
- 16Lateraltowards the side
- 17Ipsilateralsame side
- 18Contralateralopposite side
- 19Planes through the Brain: 1. Midsagittalsection cut vertically through the brain
- 20Planes through the Brain: 2. Horizontal:section cut through horizontally
- 21Planes through the Brain: 3. Coronalhorizontal from the top
- 22—Midsagittal
Horizontal
Coronal
- 23List the major parts of the CNS (4)Cerebrum
Cerebellum
Brain Stem
Spinal Cord - 24Cerebrum –______________ cortex - two ________________ _______________divided by the ________ _____________ (midline) - concerned with ________________ sensation and movementcerebral
cerebral hemispheres
sagittal fissure
contralateral - 25Cerebellum - ______ hemispheres - concerned with ___________________ motor controltwo
ipsilateral - 26Brain stem - most ______________ part of the brain - concerned with ____ _____________ (respiration, body temp)primitive
life functions - 27Spinal cord - responsible for ___conduit for info to and from the brain
- 28—(left to right)
Cerebrum
Cerebellum
Brain stem
Spinal Cord
Sagittal fissure
Brain stem
- 29Major brain divisions: 1. Forebrain - - 2. Midbrain: - - 3. Hindbrain - -1. cerebral cortex
thalamus (retina)
2. midbrain
- tectum (sup. & inf. colliculus)
- tegmentum
3. Hindbrain
- cerebellum and pons
- medulla - 30The spinal cord has __ segments Each segment has a pair of _____ ______ Each spinal nerve consists of a: 1. ___________ root (sensory) 2. _________ root (motor)31
spinal nerves
dorsal root
ventral root - 31The spinal cord has five regions, with different numbers of spinal segments: 1. 2. 3. 4. 5.1. Cervical – 8
2. Thoracic – 12
3. Lumbar – 5
4. Sacral – 5
5. Coccygeal - 1 - 32—
- 33—
- 34What is a dermatome?Skin surface sensory region
- 35How many pairs of cranial nerves are there? What is their responsibility?12 pairs
they take care of function in the head - 36Meninges - "covering" (greek) What are the 3 meninges that cover the brain?1. Dura mater "hard mother" (thick like leather)
2.Arachnoid "spider" (greek)
3. Pia Mater "gentle mother"
- 37The ventricular system is a set of ____interconnected cavities (ventricles) in the brain, where the __________________ is produced.4
cerebrospinal fluid (CSF) - 38Most _____________ is found within the ventricular system, in the brain. Spaces within the brain that contain CSF are called _________. The ventricular system is a series of ventricles and canals that move CSF within the brain and transport in out to the _____________space.choroid plexus
ventricles
subarachnoid - 39Your ventricular system contains about ____ml of CSF. You produce about _____ml/day150
500 - 40—
- 41—
