143 (8) Anatomy Objectives Flashcards
(17 cards)
List the 4 major types of ion channels involved in neuron and muscle fiber physiology.
- ) leak channels
- ) mechanically-gated
- ) ligand-gated
- ) voltage-gated
Identify the following features of a neuron.
.
Identify layers and regions of spinal cord:
- epidural space
- dura matter
- subdural space
- arachnoid matter
- subarachnoid space
- pia matter
- denticulate ligaments
.
State what fills epidural space.
Provides cushion of fat and blood vessels between vertebrae and dura matter.
State what fills the subdural space.
Interstitial Fluid
Blood or pus (under pathologic conditions)
State what fills the subarachnoid space
filled with cerebrospinal fluid, which surrounds the entire brain and spinal cord.
Why are the cervical regions and lumbar regions of spinal cord enlarged and the thoracic region not?
Thoracic region supplies only the internal and external intercostal muscles
Other 2 regions arise from nerves to and from upper and lower limbs
Determine at which level the spinal cord terminates in relation to the vertebrae of the spinal column.
Spinal cord terminates into the CONUS MEDULLARIS.
Conus medullaris contains the FILUM TERMINALE which attaches spinal cord to the coccyx
Identify the following Rami of a spinal nerve:
- ventral ramus
- dorsal ramus
- ramus communicans
- meningeal branch
.
List Major Components of 2 and 3 neuron reflex arc
- ) receptor
- ) Sensory neuron
- ) integrating center
- ) motor neuron
- ) effector
Identify regions in a spinal cord:
- cervical enlargement
- thoracic segment
- lumbar enlargement
- conus medullaris
- cauda equina
- filum terminale
- sympathetic chain ganglia??
.
Identify regions in spinal nerve roots and spinal nerve:
- ventral root
- dorsal root
- dorsal root ganglion
- ventral ramus
- dorsal ramus
- ramus commincans??
- meningeal branch??
.
What are the 4 major plexus and what nerve forms from each?
.
Identify the following on cross connection of spinal cord:
- anterior median fissure
- posterior median sulcus
- gray horns
- gray/white commissure
- white columns
.
List Major Components of stretch reflex
.
List major Components of Tendon reflex:
.
List Major Components if crossed extensor reflex:
.
