Homework Answers
1. Dendritic branches.
2. Cell body.
3. Axon hillock.
4. Initial segment.
5. Myelin sheath.
6. Node of ranvier.
7. Synaptic terminal.
8. Motor neuron.
9. Sensory neuron.
10. The cell body of the motor neurons present inside of the CNS( central nervous system), that controls skeletal muscle. The motor neurons carry signals out of the CNS.
11. The cell bodies of the sensory neurons present outside of the CNS. The sensory neurons provide the information about touch, pain and temperature. Sensory neurons bring signals in to the CNS.
12. A non - signaling (resting) neuron has a voltage across its membrane is called resting Membrane potential. Resting Membrane potential is determined by concentration gradients of ions across the Membrane.
Sodium and potassium channels establish resting membrane potential.
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efer Figure2 to answer questions 18-21: 8. produce the myelin sheaths of neurons in the central Figure 2 nervous system. 19 form the Blood Brain Barrier 20._ are responsible for neurotransmitter release. 21 have ligand gated ion channels that are activated by neurotransmitters 22. Functionally, which cellular location is the neuron's "decision- making site" as to whether or not an action potential will be initiated? A axonal membrane B. axon hillock C. dendritic membrane D. presynaptic membrane 23. Calcium and...
For
each multiple choice, what is the answer and why?
5. Myelin A) is only found in the peripheral nervous system B) is secreted from the axon terminals of autonomic neurons. C) is a carbohydrate within the membranes of some neuroglia. D) is a chemical present in the plasma membrane of neurons. E) influences the rate of conduction of an electrical signal down an axon. 6. Which of the following organs/structures is (are) innervated by somatic motor nerves? (only ONE...
change pas channels in the volta t ive protein to change shape. This A of the S l e terminal siste oplasmic reticum calcio p r eneule warcoplasm reticulum sodium ions m o nster transverse tubules sarcolemma: calcium ions Saroplasmic reticum: triadsarcolemma: calcium ions sons bind to This causes a change in shape and exposing C D E Calcium vesicle tylcholine action potential Sodium sarcolemma calcium on myosin heads Sodium sacoplasmic reticulum calcium ions actin 15. An attaches to exposed...
Bio
152 mideterm paper.
12. Name and explain the 3 types of movement across a plasma membrane, Circle the letter of the type that keeps a resting neuron at-70mV. How does the cell do this? 13. List the 3 types of Functional neurons and their purposes * 14. In your own words, describe how an Action Potential (AP) gets started. * 15. List the steps necessary for chemical information transmission across a synapse. Start your description where the AP reaches...
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