Anatomy Questions

1. Signal comes to the neuron, ACH binds to receptors on dendrites, cell body, or axon. 2. Na+ channels open 3. Membrane depolarizes 4. Action potential is sent down axon 5. Voltage gated Ca+ channels open 6. Ca+ enters synaptic knob 7. Vesicles to fuse with membrane of synaptic knob. 8. Neurotransmitters are released.

can be part of the brain or spinal cord. is in between nerves and conveys impulses from various parts of the CNS

what is needed for a neuron to fire, becomes positive enough.

6.) Voltage gated K+ channels open on axon membrane and K+ moves out (repolarization)

negative on the inside, so no action potential, polarized

what is the value of the resting membrane potential

somatic motor fibers are for muscle movments and somatic sensory fibers are for skin and special senses

11.) neurotransmitter binds to ligand gated channels on post-synaptic neuron neuron or motor end plate.

central nervous system: brain and spinal chord, peripheral nervous system: nerves and ganglia outside of the CNS

4.) If enough + enters to reach threshold @ the axon hillock an action potential will fire

at rest what ion is actively transported out of the cell

liquid part of the blood used to transport

pericardiacophrenic artery and musculophrenic artery (branches of internal thoracic artery)

internal thoracic (mammary) artery, axillary artey, intercostal arteries

subscapular artery, anterior circumflex humeral artery, posterior circumflex humeral artery

What does a change in frequency define ?

What is the fluid filled portion of the inner ear associated with hearing ?

Where is the pressure change picked up May the hairs ?

What are short distance local messengers called

What is the fluid filled part of the inner ear associated with balance