Flashcards in Nervous System (exam 2) Deck (67):
What are the 3 basic functions of the nervous system?
What makes up the CNS?
What function of the nervous system is carried out by the CNS?
What is the PNS divided into?
Autonomic Nervous System
Somatic Nervous System
What is the ANS divided into?
Sympathetic Nervous System
Parasympathetic Nervous System
What does the Sympathetic Nervous System do?
Fight or Flight
What does the Parasympathetic Nervous System do?
Rest and Digest
Feed and Breed
What does the Somatic Nervous System do?
Voluntary control of the skeletal muscle
What does the ANS do?
Involuntary control of smooth muscle, cardiac muscle, glands
How many cranial nerves are there?
How many spinal nerves are there?
Out of spinal cord
What is the afferent pathway?
What is the efferent pathway?
What part of the neuron receives information?
What part of the information sends information?
What speeds up signal transmission on the neuron?
What is the Axon Hillock?
AP begins here
Where is the Grey matter in spinal cord?
Where is the Grey matter in brain?
Outside of brain
Where is the White matter in the spinal cord?
Outside of cord
Where is the White matter in the brain?
Inside of brain
What and where are Oligodendrocytes?
Myelinate central neurons
What and where are Schwann cells?
Myelinate peripheral neurons
What and where are Ependymal cells?
Make CSF from blood plasma
Ciliated and move CSF
What and where are Astrocytes?
Blood brain barrier
What and where are Microglia?
Macrophages of CNS
What are Nodes on Ranvier and what do they do?
Spaces in between myelin
Allow the signal to jump form node to node speeding up conduction
What is the region between adjacent neurons?
What transmits impulses across the synapse?
What is a neuromuscular junction?
Synapse of neuron and skeletal muscle
What is the outer most layer of meninges?
What is the middle layer of the meninges?
What is the inner most layer of the meninges?
What is the space between the pia and arachnoid mater?
What is the space between the dura and arachnoid mater/
Where is the CSF made?
At choroid plexus
What are the bumps of brain called?
What are the grooves of brain called?
What does the central sulcus separate
Sensory and motor
What is a fissure in brain?
Real deep groove
What is the corpus collosum?
Connection/ Communication between right and left hemispheres
What is the frontal lobe responsible for?
What is the temporal lobe responsible for?
What is the brain stem responsible for?
What is the cerebellum responsible for?
What is the occipital lobe responsible for?
What is the parietal lobe responsible for?
What is involved in a reflex arc?
How many cervical vertebrae are there?
How many thoracic vertebrae are there?
How many lumber vertebrae are there?
How many sacral vertebrae are there?
How many coccyx vertebrae are there?
Is the dorsal nerve root motor or sensory?
Is the ventral nerve root motor or sensory?
What physiologic changes occur during fight or flight?
Accelerates heart rate
Constricts blood vessels to smooth muscle (vasoconstriction)
Dilates blood vessels to skeletal muscle (vasodilation)
Decreases GI movement (decrease peristalsis)
Dilation of pupil (mydriasis)
Effects on glands: Increases epinephrine, sweat secretion and decreases digestive secretion
What physiologic changes occur during rest or digest?
NO effect on blood vessels to smooth muscle
NO effect on blood vessels to skeletal muscle
Increases peristalsis (digestion)
Contraction of pupil (miosis)
Effects on glands: No effect on adrenal medulla or sweat glands, but increases secretion of digestive enzymes
How many neurons are involved in ANS transmission?
How many neurons are involved in Somatic Nervous System transmission?
What kind of pre and post ganglionic neurons are in Sympathetic Nervous System? What do they secrete?
Short Pre (Ach: Acetylcholine)
Long Post (Norepinephrine or Epinephrine)
What kind of pre and post ganglionic neurons are in Parasympathetic Nervous System? What do they secrete?
Long Pre (Ach: Acetylcholine)
Short Post (Ach: Acetylcholine)
What neurotransmitter is released in somatic nervous system?
What nerve injuries can regenerate and way?
Nerve injuries in PNS (Schwann cells) can regenerate
Where are the rods located for vision? What do they pick up?
Monochromatic image and image quality
Black and white