What are the following? 1. 2. 3. 4. which letters in the diagram are affiliated
ID: 168533 • Letter: W
Question
What are the following?
1.
2.
3.
4.
which letters in the diagram are affiliated with regulating your heart?
Due Date: March 18th, 2017 Submit your assignment using UBlearns Question 1 (8 Marks) The nervous system can be classified into groups as follows: input to output from CNS from CNS to periphery periphery division division Stimuli in digestive Sensory visceral Stimuli stimuli smooth musde Skeletal Cardiac muscle muscles Exocrine glands Some endocrine glands Effector organs (made up of muscle and gland tissue) What are the following: which letters in the diagram are affiliated with regulating your heart? What does the letter A represent?Explanation / Answer
The nervous system can be divided into:
The Central Nervous System (CNS) and the Pheripheral Nervous System (PNS), as shown by the numbers 1 and 4, respectively.
Central Nervous System
The CNS or Central Nervous System comprises of the brian and the spinal cord, both denoted by the letter A. It houses the "response center" for the body, that reacts to stimuli recieved such as cold, warmth, sweetness and pain, and gives responses to such stimuli.
The stimuli are received by the CNS from the sensory neurons of the PNS and respsonses to the stimuli are sent to the motors neurons of the PNS.
Peripheral Nervous System
The peripheral nervous system (PNS) refers to all the neurons (and their supporting cells, or glia) of the body outside the brain and spinal cord (central nervous system). It is divided into the sensory division and the motor division, denoted by the numbers 2 and 3, respectively.
Sensory Division
The sensory division of the PNS carries all types of sensory information to the CNS, including that from the "special senses" of touch, smell, taste, hearing, and sight, as well pain, body position and a variety of visceral sensory information. The information from the viscera includes some of which the body is aware (bladder fullness and stomach aches, for example), as well as much of which the body is not aware, including blood pressure, concentration of substances in the blood, and many other bits of sensory information used to regulate the internal environment.
Motor Division
The motor division of the PNS is subdivided into several branches. The somatic motor branch carries voluntary (willed) commands to the skeletal muscles, allowing a person to perform such action as swatting a mosquito or sticking out the tongue. The autonomic motor branch carries autonomic (automatic, or unwilled) commands to a variety of muscles and glands throughout the body, allowing the brain to control heart rate (as denoted by the letters E and F) , blood pressure, breathing rate, sweat production, and hormone release, among other functions.
We can answer the questions now as below:
The numbers 1,2,3 & 4 refer to:
1. Central Nervous System (CNS)
2. Sensory Division of the Peripheral Nervous System.
3. Motor Division of the Peripheral Nervous System.
4. Periphral Nervous System (PNS) that contains the Sensory and Motor Division.
The letters affiliated with regulating the heart are E and F. Heart comprises of smooth muscles and is regulated autonomically. As mentioned above, the autonomic motor branch is responsible for the muscles. The letters E and F are part of this system and denote the nervous system that is immediately responsible for the muscles, that also incldue the heart muscles.
As mentioned at the start, the Central Nervous System (CNS) and the Pheripheral Nervous System (PNS), as shown by the numbers 1 and 4, respectively. The CNS or Central Nervous System comprises of the brian and the spinal cord. So wihtin the number 1, that is, the CNS, we have the letter A, which is the brain and the spinal cord.
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