Moorpark College Neurophysiology of Nerve Impulses Laboratory Homework 20 Points Total Name: ___________________________________ PRINT THE FOLLOWING PAGES AND PROVIDE A HANDWRITTEN ANSWER TO ALL QUESTIONS. Answer the question in the space provided for each question. 1. In the PHYSIO-EX 9.0 Activity 1‚ the simulation showed you how the resting membrane potential depends on the concentration of K+ and Na+ in the ECF. Some data were generated while measuring the resting membrane potential
Premium Action potential Nerve
1. Why did Allen’s heart rate and blood pressure fall in this time of emergency (i.e. at a time when you’d expect just the opposite homeostatic response)? Pg. 969 This occurred because Allen’s spinal cord has decreased perfusion due to damage‚ and a broken vertebral bone. Also‚ there has been a disruptions of the sympathetic fibers of his autonomic nervous system therefore it can no longer stimulate the heart. Allen likely has spinal shock. 2. Upon admission to the hospital‚ Allen’s breathing
Premium Spinal cord Muscle Nervous system
on to the olfactory nerve. This nerve enters the brain and will cause the subject to understand the odor to be hamburger‚ of which he wants to eat. The brain then makes the decision to move forward with eating the hamburger. The brain must tell the hand to reach out and grab the burger to bring it to the mouth. It does so by sending an impulse down the spinal nerve until it branches off on to the arm nerves‚ which include the radial‚ ulnar‚ and median nerve. These three nerves in conjunction will
Premium Olfaction Nervous system Nerve
current is directed over the nerves that lead to those electrodes so that a computer can record and evaluate the consequent nerve impulse for velocity‚ onset and amplitude. Neuropathies are caused by damage to the nerves axon and/or damage to the myelin sheath surrounding the nerve. If a response is slower than normal‚ damage to the myelin sheath is implied. If the height of the response’s amplitude is low with a relatively normal speed of conduction‚ damage to the nerve axon is implied. How
Premium Nervous system Action potential Axon
vagina‚ womb (uterus)‚ fallopian tubes and ovaries The Nervous System What is it The nervous system is the body’s main control system. It is made up of the Central Nervous System (or CNS) and a network of nerves that extend from the CNS to all parts of the body. The nervous system regulates both voluntary activities‚ such as walking and talking‚ and involuntary activities‚ such as breathing‚ which you make no conscious decisions about. The CNS has two main
Premium Reproductive system Central nervous system Nervous system
ANTHROPOLOGY 316: Human Anatomy & Physiology I Lab Fall 2013 Lab L05-7052 Friday 12:35-2:35 AS 11 Lecturer: Kelli H. Tamvada‚ M.A. Contact Information: KTamvada@albany.edu Office location: AS 235 Office hours: Tuesdays 3:00-5:00‚ or by appointment Required Texts: Heisler‚ R. E.‚ Hebert‚ N.‚ Chinn‚ J. Krabbenhoft‚ K. M.‚ and Malakhova‚ O. (2014) PAL 3.0 Lab Guide: practical anatomy lab. Pearson Zao‚ P.‚ Stabler‚ T.‚ Smith‚ L.‚ Lokuta‚ A.‚ Griff‚ E. (2014). PhysioEx 9.0 Laboratory
Premium Peripheral nervous system Nervous system Nerve
neurotransmitters. A. RESPONSES TO NERVE STIMULATION Attach a copy of your experimental recordings showing a period of spontaneous contractions and the response to stimulating the nerves at 20 Hz with both a voltage that produced only a modest response and the voltage that produced the maximal response. 1) Briefly describe the response of the ileum when it is unstimulated and during stimulation of the nerves. It is shown that the rabbit ileum has a constant rate of
Premium Neurotransmitter Acetylcholine Nervous system
of this practical. (5) A. Responses to Nerve Stimulation Attach a copy of your experimental recordings showing a period of spontaneous contractions and the response to stimulating the nerves at 20 Hz with both a voltage that produced only a modest response and the voltage that produced the maximal response. (5) 1) Briefly describe the response of the ileum when it is unstimulated and during stimulation of the nerves. (5) 2) What is the frequency of the regular spontaneous
Premium Acetylcholine Nervous system Nerve
stimulated muscle which is higher than the threshold voltage for the directly stimulated nerve‚ 10 mV. The direct stimulation of the muscle required a higher voltage in order to get a contraction. This most likely occurs for two reasons. First is the fact that once a nerve reaches its threshold voltage‚ it perpetuates the action potential down the nerve to the muscle. This brings us to the second reason‚ the nerve branches out and reaches many thousand parts of the muscle‚ which all get depolarized
Premium Muscle Acetylcholine Action potential
The Computer. Health Ergonomics Effects of extended use Long term computer exposer can cause eye strain Using the computer for a long period of time causes the eye to be stained due to too much light Carpal tunnel syndrome This is a pinched nerve in the wrist and is caused due to the excessive amount of typing on the computer Inappropriate lighting Eye Strain Materials should be placed on a document holder and moved close enough to the screen so that you do not have to swing your head and
Free Nerve Blood vessel Blood