Question and answer
: List the differences between cranial and spinal nerves
The basic difference between the cranial nerves and the spinal nerves is the role they play, in helping our bodies to function properly. [ The body has what is called a peripheral nervous system consisting of more than 100 billion nerve cells, which run all throughout our body, making connections with our brain, as well as other parts of the body, and sometimes with each other. The peripheral
nervous system is composed of two systems the somatic and autonomic nervous system. These nerves connect with both the brain and the spinal cord. Our muscles are controlled by voluntary and sensory receptors in the skin, this is an example of the somatic system. The autonomic system connects the brain stem and the spinal cord to the internal organs, and also regulates the body processes, like heart rate and blood pressure, stomach acid, and the speed of food travelling through our digestive systems. The autonomic nervous system is divided into sympathetic and parasympathetic divisions. Each has a job to do within the body. The sympathetic division helps us to deal with stressful or emergency situations. They help us to know, when to fight and when to take flight. The parasympathetic division helps the body to function, in normal situations. Both divisions regulate our pulse, breathing and blood pressure to keep them stable. The cranial nerves connect our brain to our eyes, ears, nose, throat and other parts of our head, neck and trunk. There are twelve (12) pairs of cranial nerves. The nerves, which connect the spinal cord to with other parts of the body are called spinal nerves. The brain communicates or connects with other parts of the body through the spinal nerves. We have thirty-one (31) pairs of spinal nerves. Spinal nerves and cranial nerves are connected with the somatic and the autonomic parts of the peripheral nervous system. Some nerves are sensory nerves and other nerves are motor nerves, depending upon their function within the body. Read more: ]
Expert answered|vanilla2bean|Points 185|
Question
Asked 6/7/2012 7:36:31 PM
0 Answers/Comments
Get an answer
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
List the steps in chemical synaptic transmission.
Weegy: The process by which this information is communicated is called synaptic transmission and can be broken down into four steps. [ First, the neurotransmitter must be synthesized and stored in vesicles so that when an action potential arrives at the nerve ending, the cell is ready to pass it along to the next neuron. Next, when an action potential does arrive at the terminal, the neurotransmitter must be quickly and efficiently released from the terminal and into the synaptic cleft. The neurotransmitter must then be recognized by selective receptors on the postsynaptic cell so that it can pass along the signal and initiate another action potential. Or, in some cases, the receptors act to block the signals of other neurons also connecting to that postsynaptic neuron. After its recognition by the receptor, the neurotransmitter must be inactivated so that it does not continually occupy the receptor sites of the postsynaptic cell. Inactivation of the neurotransmitter avoids constant stimulation of the postsynaptic cell, while at the same time freeing up the receptor sites so that they can receive additional neurotransmitter molecules, should another action potential arrive. ] (More)
Question
Expert Answered
Asked 5/31/2012 7:21:54 PM
0 Answers/Comments
List the types of neuroglia and their functions.
Weegy: - Astrocytes, known for the many processes attached to their cell body, provide structural support and their processes often have 'end feet' that abut the basal lamina around the capillary endothelium or line the exterior surface of the CNS, [ where they contribute to the pial-glial external limiting membrane. Cell bodies of astrocytes are among the largest for the glia, but only overlap the lower end for size of neurons. - Oligodendrocytes form myelin sheaths around axons in the CNS. One oligodendrocyte can form myelin sheaths along more than one internode of more than one axon. They have smaller cell bodies than astrocytes and relatively fewer processes leaving the cell body. The electron micrograph shows the cell body of an oligodendrocyte. Its nucleus is at the upper right and processes extend around myelinated fibers toward the lower left. The relatively electron dense cytoplasm is characteristic. - Microglia are the main phagocytic cell and antigen-presenting cells in the CNS. They have the smallest cell bodies among the neuroglia. There are at least two other cells in the adult mammalian CNS that could be considered 'glial-like cells' - Ependymal cells line most of the ventricular system of the CNS, which is an inner space or lumen. At least seven of them with nuclei are evident in this electron micrograph of spinal cord. The lumen/central canal is at upper right. - Choroidal cells form the inner layer of the choroid plexus which abuts the ventricular system at certain places in the brain. These cells secrete cerebrospinal fluid into the ventricles.The phrase 'neuroglial-like' is also used to account for cells found in the peripheral nervous system (PNS) that are not neurons and that have functions similar to the classically described neuroglia. - Schwann cells form myelin (one Schwann cell/internode/axon) in the PNS. In the photomicrograph, their nuclei are the dark, cigar-shaped structures among the myelinated fibers that occupy the center ... (More)
Question
Expert Answered
Asked 5/31/2012 7:22:15 PM
0 Answers/Comments
List the steps in chemical synaptic transmission
Weegy: I. Synthesis and Storage of Neurotransmitters II. Neurotransmitter Release III. Neurotransmitter Postsynaptic Receptors IV. Inactivation of Neurotransmitters (More)
Question
Expert Answered
Asked 5/31/2012 7:45:56 PM
0 Answers/Comments
During the biggest game of his high school football career, Bill the best wide receiver in the league, leaps high into the air in the end zone to score the game-winning touchdown. A player for the other teams hits him hard, knocking him into the goalpost. Bill crumples to the ground, unmoving. When the EMTs get to him, Bill is paralyzed on both sides of his body and in respiratory arrest. Given your knowledge of the nervous system can you pinpoint the location of Bill's injury? Explain you ...
Weegy: Please contact Weegy Research for this question, it requires in depth research. User: During the biggest game of his high school football career, Bill the best wide receiver in the league, leaps high into the air in the end zone to score the game-winning touchdown. A player for the other teams hits him hard, knocking him into the goalpost. Bill crumples to the ground, unmoving. When the EMTs get to him, Bill is paralyzed on both sides of his body and in respiratory arrest. Given your knowledge of the nervous system can you pinpoint the location of Bill's injury? Explain you arrived at your conclusion Weegy: As for the injury I`d suspect a spinal injury because he was paralyze on both sides of his body. [ The spinal injury is either in the lower neck or upper thoracic (chest) regions because he was in respiratory arrest, but the medics would have to exclude any pre-existing (un-diagnosed ) medical condition . ] (More)
Question
Expert Answered
Asked 5/31/2012 8:09:01 PM
0 Answers/Comments
18,415,278 questions answered
Popular Conversations
. What is the value of 4 cubed? A. 24 B. 43 C. 64 ...
Weegy: The answer is C. 125,000,000 User: What is the value of 324? A. 1,048,576 B. 18 C. 128 D. ...
11/22/2014 4:52:09 PM| 3 Answers
It rained yesterday and is supposed to be sunny today. This is an ...
Weegy: It is an example of B) climate. User: In Hawaii, you can almost always expect 80°F temperatures and daily ...
11/23/2014 3:21:11 AM| 3 Answers
Who is the prime minister of India?
Weegy: Manmohan Singh is the 13th and current Prime Minister of India. User: National flower of India?
11/22/2014 1:28:06 AM| 2 Answers
One of the major advantages of VANs is cost. True or False
Weegy: What is false? Do you have a question for Weegy? User: True or False One of the major advantages of VANs is ...
11/22/2014 2:06:05 AM| 2 Answers
293.55 is 51.5% of what number?
11/22/2014 3:36:30 AM| 2 Answers
When purchasing merchandise for resale for cash, record the ...
Weegy: User: When purchasing merchandise for resale for cash, record the transaction in the Answer: Business documents ...
11/22/2014 6:52:09 AM| 2 Answers
The _____ is the smallest interval in Western music. half ...
Weegy: In Western music, intervals are most commonly differences between notes of a diatonic scale. User: Which types ...
11/22/2014 9:44:17 AM| 2 Answers
Which of the following best describes the advantage of having data ...
Weegy: a. The number of digits that can be included within the data best describes the advantage of having data ...
11/22/2014 11:03:31 AM| 2 Answers
Weegy Stuff
S
L
1
L
P
C
1
P
C
1
L
P
C
1
Points 2381 [Total 14092]| Ratings 10| Comments 2281| Invitations 0|Offline
S
L
Points 1279 [Total 3565]| Ratings 0| Comments 1279| Invitations 0|Offline
S
1
L
1
L
P
P
L
P
Points 702 [Total 14076]| Ratings 0| Comments 702| Invitations 0|Offline
S
L
Points 700 [Total 1221]| Ratings 6| Comments 640| Invitations 0|Online
S
Points 479 [Total 511]| Ratings 1| Comments 469| Invitations 0|Offline
S
1
L
L
Points 211 [Total 6605]| Ratings 0| Comments 211| Invitations 0|Online
S
L
Points 150 [Total 1446]| Ratings 3| Comments 120| Invitations 0|Offline
S
Points 50 [Total 50]| Ratings 0| Comments 0| Invitations 5|Offline
S
Points 46 [Total 46]| Ratings 3| Comments 6| Invitations 1|Offline
S
Points 40 [Total 40]| Ratings 4| Comments 0| Invitations 0|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.