Explain the origination and functions of the nervous system
Introduction of Nervous System
The nervous system is a network of nerve cells that communicate to the brain by sending electrical and chemical impulses. The nervous system deals with fast responses of the body and are often short term. There are two main parts the nervous system.
The first part is the Central Nervous System (CNS) and it is found in the brain all the way down the spinal cord. The CNS is the part that receives the impulses and reacts to the impulses accordingly.
The second part is the peripheral nervous system and it is found under the skin and allows for movement in the muscles. Peripheral nervous system has 2 parts to it
• Sensory Neurons: o These are neurons that …show more content…
When these neurons receive impulses; they move the muscles buy stimulating it.
If you touch a needle you feel pain; The pain you feel is the excitation of the sensory neurons which send an impulse to the CNS and then relay it back to motor neurons which stimulate the muscle to move away from the needle. This happens in a fraction of a second.
Introduction of Endocrine System
The endocrine system is the vast network of glands in the body that is responsible for controlling long term regulation of the body; example of these would be the blood sugar levels, body temperature, and digestion.
The endocrine system is made up of glands which release hormones into the blood stream to send messages to different parts of the body ranging from organs to body tissues. These hormones can be in the body for a long time, ranging from couple of hours to weeks.
There are many glands in the human body. These glands produce hormones and are connected to blood vessels which they secrete these hormones.
• Pituitary o It secretes hormones that instruct other glands to make hormones. It is also connected to the hypothalamus which is the bridge to the nervous system.
•
Introduction of Nervous System
The nervous system is a network of nerve cells that communicate to the brain by sending electrical and chemical impulses. The nervous system deals with fast responses of the body and are often short term. There are two main parts the nervous system.
The first part is the Central Nervous System (CNS) and it is found in the brain all the way down the spinal cord. The CNS is the part that receives the impulses and reacts to the impulses accordingly.
The second part is the peripheral nervous system and it is found under the skin and allows for movement in the muscles. Peripheral nervous system has 2 parts to it
• Sensory Neurons: o These are neurons that …show more content…
When these neurons receive impulses; they move the muscles buy stimulating it.
If you touch a needle you feel pain; The pain you feel is the excitation of the sensory neurons which send an impulse to the CNS and then relay it back to motor neurons which stimulate the muscle to move away from the needle. This happens in a fraction of a second.
Introduction of Endocrine System
The endocrine system is the vast network of glands in the body that is responsible for controlling long term regulation of the body; example of these would be the blood sugar levels, body temperature, and digestion.
The endocrine system is made up of glands which release hormones into the blood stream to send messages to different parts of the body ranging from organs to body tissues. These hormones can be in the body for a long time, ranging from couple of hours to weeks.
There are many glands in the human body. These glands produce hormones and are connected to blood vessels which they secrete these hormones.
• Pituitary o It secretes hormones that instruct other glands to make hormones. It is also connected to the hypothalamus which is the bridge to the nervous system.
•