All sensory info is picked up in the Central Nervous Sys
*FALSE*
It is the Cerebellum tht actually allows a person 2 be aware of sensory stimulaton.
*FALSE*
Effectors of the nervous sys incl the lungs.
*FALSE*
Neurons R not able 2 divide. T/F
*TRUE*
Membrane potential exists when the membrane is depolarized.
*FALSE*
When a Neuron is @ rest, the outside of its Membrane is positively charged. T/F
*TRUE*
A nerve impulse is the flow of electrical current along the Axon membrane. T/F
*TRUE*
A nerve impulse is the flow of electrolytes along an Axon membrane. T/F
*FALSE*
After an impulse has passed along an axon, the axon retruns 2 the repolarized state. T/F
*True*
As long as an Axon is repolarized it can't conduct another impulse. T/F
*False*
The tissues of the Central Nervous sys {CNS}R so delicate tht they mst B protected by the blood brain barrier. T/F
*TRUE*
The tissues of the CNS R so delicate tht they must b protected by the Foramen Magnum. T/F
*FALSE*
The central canal of the Spinal cord contains blood vessels.
*FALSE*
The central canal of the spinal cord contains cerebrospoinal fluid. T/F
*TRUE*
The Cerebral Cortex stores memories. T/F
*TRUE*
The Ventricles R cavities found on the surface of the brain
*FALSE*
Vital functins R regulated by the Thalamus
*FALSE*
The Diencephalon contains the ventricles.
*FALSE*
The hypothalmus maintains homeostasis?
*TRUE*
The Hypothalmus regulates heart rate & blood press. T/F
*TRUE*
When teaching pt's how 2 avaoid brian & spinal cord injuries u will recommend tht they completely stop consuming alcohol. T/F
*FALSE*
A person is 20% more likely 2 b brain injured if they bike w/out a helmet than if they wear one.
*FALSE*
- 85% would mke the sent TRUE
The Peripheral Nervous sys is part of teh CNS
*False*
There are 16 pairs of Cranial Nerves. T/F
*False*
Ganglia r collections of Neruon Cell bodies.
*True*
Most headaches can b treated effectively w/over the counter drugs.
*False*
Medical TX should be sought 4 all headaches.
*False*
*MULT CHOICE*
Which of the these Electrolytes plays an imp role in the generation of nerve impulses???
a. Calcium
b. Potassium
c. Phosphate
d. Magnesium
N.e. thing tht inflames the CNS will cause:
a. Pain
b. The blood~brain barrier 2 become more permeable.
c. Motor tremors
d. Abnormal Respirations
The spinal cord ends @ which vertebral level?
a. 1st Lumbar
b. 1st Sacral
c. 12th Thoracic
d. Coccyx
The cervical enlargement of the spinal cord cont's:
a. A Viscous liquid
b. Sensory Neurons
c. Motor Neurons
d. Muscle Fibers
A person can consciously inhibit a reflex bec:
a. The reflex occurs exclusively in the spinal cord
b. all bdy responses r under voluntary control
c. The impulse goes 2 the Crebral Cortex
d. Repolarization occurs in an upward direction
A young woman who has compliained of tingling in her fingers & toes is dx'd w/Raynaud's disease. Her Dr. has scheduled her 4 a Regional Sympathectomy. She asks u wht good this will do her. Your best response is:
a. U should ask your doctor 2 explain it 2 u
b. It will interfere w/impulses frm nerves tht cause blood vessels 2 constrict.
c. If u dn't have this done u may have 2 hvesme of your fingers amputated in the future.
d. this a trial surgery. The outcome is not knwn 4 sure
Cell Body:
*Contains Mitochondria
*Produces Protein & Energy
Axon:
*Extend far away frm the cell bdy
* Branches near the cell bdy
Dendrites:
*Send info away frm the cell bdy
Schwann Cells:
*Insulates the Axon
Sensory Neurons:
*Afferent Neurons
*Pick up info frm receptors @ the tips of their Dendrites
InterNeurons:
*Decision makers of the Nervous Sys
*Found only in the CNS
Motor Neurons
*Efferent Neurons
*Carries impulses 2 the peripheral Nervous sys
*Stimulates glands 2 secrete
Synaptic Knob:
*The endo of Axon Branches
*Contacts Dendrites, Cell Bodies & Axons
Neurotransmitter:
*Cause Muscles 2 contract or Relax
*Casuse glands 2 Secrete
*Inhibits Neurons from sending impulses
Meninges:
*Layers of Membranes the cover the CNS*
*All 3 Membrane layers
Dura Mater:
*Layers of Membranes tht cover the CNS*
*Toughest Layer
Pia Mater:
*Layers of Membranes tht cover the CNS*
*Inner Most Layer
*Holds blood vessels 2 the surface of the brain
Arachnoid Mater:
*Layers of Membranes tht cover the CNS*
*Middle Membrane Layer
*Like a spider web
SubArachnoid Space:
*Layers of Membranes tht cover the CNS*
*Contains Cerebral Spinal Fluid*
GRAY:
*The Spinal Cord is made up of Gray Matter. *
*Inner part of the Spinal Cord*
* Cont's Neuron Cell Bodies*
*Cont's Dendrites*
*Divisions R called Horns*
*Divisions r called Columns*
WHITE:
*The Spinal Cord is made up of Gray Matter*
*Outer prt of the Spinal Cord
*Contains Myelinated Axons
Ascending Track:
*Structure/Functions of the Spinal Cord*
*Carries Sensory info 2 the Brain*
Descending Track:
*Structure/Functions of the Spinal Cord*
*Carries Motor info frm the Brain 2 the Muscles & Glands*
Reflex Arc:
*Structure/Functions of the Spinal Cord*
*Can cause a motor response w/out gett'n info frm the brain*