Mindtap Biology, 1 Term (6 Months) Printed Access Card For Starr/taggart/evers/starr's Biology: The Unity And Diversity Of Life
15th Edition
ISBN: 9781337408493
Author: STARR, Cecie; Taggart, Ralph; Evers, Christine; Starr, Lisa
Publisher: Cengage Learning
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Chapter 32, Problem 3CT
Hansen's disease, also known as leprosy, arises when bacteria infect the Schwann cells that wrap around axons of peripheral nerves to form a myelin .shealth. Attacks by the immune system on the bacteria-infected glial cells causes a loss of myelin in peripheral nerves. How is Hansen's disease similar to multiple sclerosis? Why do the symptoms differ? Why are people with Hansen's disease unusually prone to injuring themselves?
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A patient has been experiencing numbness and pain in their hands and feet during the winter. They were initially diagnosed with Reynauds (which is caused by an overactive sympathetic nervous system cutting off blood flow to the hands in the cold), but recently they have been experiencing issues with fine motor control in their hands, and the doctor is concerned that it could be Multiple Sclerosis. How could you test to see which condition is causing this?
If it is MS, what is causing these symptoms? Why did it start in their hands and feet?
How would you treat this patient, if they have MS?
multiple sclerosis is a demyelinating disease in which the patient's immune system attacks and destroys the cells that form the myelin sheath in the central nervous system. what types of symptoms would you expect from such a disease? why? would Schwann cells or oligodendrocytes be affected? explain
Gray matter consists of...
cell bodies, dendrites, and unmyelinated axons
myelinated axons
unmyelinated axons
myelinated cell bodies, dendrites, and axons
Chapter 32 Solutions
Mindtap Biology, 1 Term (6 Months) Printed Access Card For Starr/taggart/evers/starr's Biology: The Unity And Diversity Of Life
Ch. 32 - Prob. 1DAACh. 32 - Prob. 2DAACh. 32 - Prob. 3DAACh. 32 - Prob. 4DAACh. 32 - ___ relay messages from the brain and .spinal cord...Ch. 32 - When a neuron is at rest, ________ . a. it is at...Ch. 32 - An action potential begins when ___ . a. a neuron...Ch. 32 - Most human axons have a myelin sheath that ___ ....Ch. 32 - Neurotransmitters are released. by ___ . a. axon...Ch. 32 - What chemicals is released by the axon terminals...
Ch. 32 - Which neurotransmitter is important in...Ch. 32 - Skeletal muscles are controlled by ______ . a....Ch. 32 - When you sit quietly on the couch and read, output...Ch. 32 - In the central nervous system, all synapses are in...Ch. 32 - The brain and spinal cord develop from the...Ch. 32 - An injury ___ in the spinal cord can lead to...Ch. 32 - ___ deep in the brain plays a role in emotion. a....Ch. 32 - Commands to move your right arm start in the...Ch. 32 - Prob. 15SQCh. 32 - Prob. 1CTCh. 32 - Most tumors that originate in the brain are not...Ch. 32 - Hansen's disease, also known as leprosy, arises...
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- Which of the following is NOT TRUE concerning astrocytes? They are the most abundant glial cells They act as bridges between the blood vessels and neurons They form the myelin sheath around the axon They repair damage 1 points QUESTION 28 Damage to large numbers of oligodendrocytes in the CNS would result in loss of the structural framework of the brain. a breakdown of the blood-brain barrier. decreased production of cerebrospinal fluid. decreased insulation around axons. 1 points QUESTION 29 Which statement about lateral inhibition is false? It occurs via inhibitory neighbouring neurons. Neighboring input is inhibited from reaching the brain. It is characteristic only of receptors in the skin. It results in a sharpening of the sensation of contrast.arrow_forwardWhat two types of macromolecules are the main components of myelin? a. carbohydrates and lipids b. proteins and nucleic acids c. lipids and proteins d. carbohydrates and nucleic acidsarrow_forwardMultiple sclerosis is a disease in which the immune system attacks and destroys the myelin sheath surrounding nerve cells. What effect would you expect the loss of myelin to have onthe speed of nerve impulses?arrow_forward
- Neurofibromatosis type 1 is a condition where tumours can grow in the nerves near the skin. The growth of tumours prevents the action potentials from quickly travelling through the neurons. Identify the nerve structure from the image below and the division of the nervous system affected by neurofibromatosis type 1. CNS = Central Nervous System PNS = Peripheral Nervous System Select one: a. Nerve Structure Division of Nervous System 3 PNS b. Nerve Structure Division of Nervous System 4 CNS c. Nerve Structure Division of Nervous System 5 PNS d. Nerve Structure Division of Nervous System 1 CNSarrow_forwardWhy is Myelin made up of Lipids and protein macromolecules?arrow_forwardThe den network of fibers that connect the two hemispheres is called the corpus Callosum. Much of what we know about the difference between the left and right hemispheres came from the study of patients with a severe form of epilepsy. To help control the number, duration, and intensity of the epileptic seizures, The corpus callosum was cut. By studying these individuals, Roger Sperry and others learned that the two hemispheres are specialized for different types of task and different modes of thought. Which hemisphere and most people would be better at putting together a puzzle? A. Neither- this is better controlled by the cerebellum B. Both are equally good at this task C. Left D. Rightarrow_forward
- Meningitis is an inflammation of the meninges that can have severe effects on neurological function. Why is an infection of meningitis type this structure is so dangerous?arrow_forwardAlzheimer’s disease is thought to cause a DECREASE in the amount of acetylcholine (ACH) being released into the synaptic cleft in specific parts of the brain. What would be a possible treatment for this disease? (So basically- what would be a possible way to increase the amount of ACH in the synaptic cleft?)arrow_forwardThe concept of “labeled lines” states that each nerve input to the brain reports only a particular type of information, such as auditory versus visual information. Does this happen because the nature of the nerve fibers conveying the information is unique or because the nature of the brain location where the signals are received is unique? How do you know this?arrow_forward
- A patient has been experiencing numbness and pain in their hands and feet during the winter. They were initially diagnosed with Reynauds (which is caused by an overactive sympathetic nervous system cutting off blood flow to the hands in the cold), but recently they have been experiencing issues with fine motor control in their hands, and the doctor is concerned that it could be Multiple Sclerosis. How could you test to see which condition is causing this? Discuss that how will you treat this patient, if they have MS?arrow_forward"Which of the following would most likely result from placing cold water in the left external acoustic meatus of an unconscious individual with an intact brainstem? a. Fast phase of nystagmus is absent, slow phase of nystagmus is to the left b. Fast phase of nystagmus is to the right, slow phase of nystagmus is to the left c. Fast phase of nystagmus absent, slow phase of nystagmus is to the right d. Fast phase of nystagmus is to the left, slow nystagmus is to the right e. Fast and slow phase of nystagmus are both absent"arrow_forwardWhat do multiple sclerosis and ALS (amyotropic lateral sclerosis) have in common?a. They both are more common in young men than in young women.b. They both impair the initiation of action potentials.c. They both damage the myelin sheath, disrupting action potential transmission.d. They both impair nerve function in the peripheral nervous systemarrow_forward
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