Nervous System 2.0 Flashcards
In the sympathetic nervous system, where is the ganglion?
Near spinal cord
What neurotransmitter does the post ganglion release in the sympathetic?
Norepinephrine
Where is the ganglion in parasympathetic?
Near organs
What is released in parasympathetic from the post ganglion?
- Acetylcholine
- Laughing gas (nitrous oxide)
What is the Vagus nerve?
Cranial nerve
What does vagus nerve do?
- Constant heart rate
- Food digestion
What is the olfactory bulb?
Smell nerve (bottom of temporal lobe)
What is the thalamus?
Relay center for sensory info.
What is the hypothalamus?
Maintain homeostasis and coordinates hormones + nerves.
Difference between Wenicke’s area and Broca’s area?
- Understanding speech
- Motor speech
Sympathetic and parasympathetic effect on the heart?
Increase heart rate, decrease
Sympathetic and parasympathetic affect on digestive tract?
Decreases peristalsis, increase digestion
Sympathetic and parasympathetic affect on liver?
- Increase glucose release
- Stores glucose in muscles and liver (release bile)
Sympathetic and parasympathetic affect on eyes?
- Dilate pupils
- Constricts pupils
Sympathetic and parasympathetic affect on bladder?
- Contracts sphincter
- Relaxes sphincter
Sympathetic and parasympathetic affect on skin?
- Decrease blood flow in skin
- Increase blood flow
Where is the spinal cord originate for parasympathetic and sympathetic?
- Cervical + sacral + 12 cranial nerves
- Thoracic + lumbar
Parasympathetic and sympathetic affect on lungs?
- Constricts bronchioles
- Dilates
4 protection layers of the CNS?
- Bone (skull and vertebrae)
- Meninges (protective membrane)
- Cerebrospinal fluid (CSF)
- Blood brain in barrier
Parts of the meninges?
- Dura mater (outer layer under bone)
- Arachnoid mater (delicate middle layer, blood vessels)
- Pia mater (Inner layer, close to CNS)
What is the Cerebrospinal Fluid? (CSF)
- Fluid in meninges
- Shock absorber
- Transports wastes and nutrients
What does the blood brain barrier do?
- protect from viruses (WBC)
- only some material pass through
True or false: Dorsal root (back) carries sensory neurons
True
Parts of the hindbrain
- Cerebellum (balance, coordination, movement)
- Medulla oblongata (autonomic nervous control)
- Pons
