Myelin Sheaths

What effect does the myelin sheath and the diameter of the nerve fiber have on the speed of action potential?

Endocrine system

Regarding the endocrine system. What is used to transmit info-to deliver message after binding to receptor?

Bloodtype

Regardless of bloodtype what is the problem if the Mother is Rh- with an Rh+ baby? 1st baby, and subsequent babies if not addressed? What happens and how? Also, this is a very strange question to ask you, I know, and if you can provide me with any info, advice, just let me know and I'll post it as a new problem and let me know how many credits. I have a very, very intimidating professor who is also an important Dr. at a local hospital who I am going to have to try to get a good recommendation from. I am a pretty creative person but clench up when trying to come up with some "brilliant questions" to ask him. How's this for your strangest request? Any advice for dealing with scary professor... click for more

histology of nervous tissue

Supply a short answer for each of the following: a) How is one-way conduction at synapses ensured? b) what is a mixed nerve c) What is the value of the connective tissue wrappings found in a nerve? d) Which cells of the following are multipolar, unipolar or bipolar: (sensory neuron, motor neuron, and interneuron)

Neurophysiology of nerve impulses

Respond appropriately to each statement below either by completing the statement or by answering the question raised. 1. The cellular unit of the nervous system is the neuron. What is the major function of this cell type? 2 and 3. What characteristics are highly developed to allow the neuron to perform this function? (hint two) 4. Would a substance that decreases membrane permeability to sodium increase or decrease the probability of generating a nerve impulse? 5. Why don't the terms depolarization and action potential mean the same thing? (Hint: under which conditions will a local depolarization not lead to the action potential?) 6. A nerve generally contains many thickl... click for more