After going through today’s lesson, in my opinion, I find that negative feedback mechanism is more important than positive feedback mechanism. Both mechanisms are important to the body, but I feel that negative feedback mechanism is more crucial to the body than positive feedback mechanism. Here is why. The positive feedback mechanism is only used when there is a potentially dangerous situation or a stressful process which must be completed quickly. Moreover, our body only uses the mechanism in certain situations like when there are cuts in the body, positive feedback mechanism kicks in and blood clotting takes place in that area of the cut. The mechanism also kicks in situations like breastfeeding and childbirth. Processes where it needs to
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As for childbirth, positive feedback mechanism prepares the uterus for a natural birth by amplifying the response but after that process, it the negative feedback mechanism which brings the uterus back to normal. Negative feedback mechanism aids in our body greatly where it constantly works to ensure our body is in the right condition to function. If the mechanism fails, our body will not be at its best to function and this serves as a great danger to the body. For example, a person is in a cold environment with a thin set of clothing, the skin naturally begins to shiver. The skin arterioles constrict, and the shunt vessels dilate. Less blood flows through blood capillaries in the skin. This reduces the heat lost by convection, conduction, and radiation. Sweat glands become less active, resulting in the decreased production of sweat. As less water in the sweat evaporates from the surface of your skin, less latent heat of vaporization is lost from the body. The metabolic rate increases to increase the amount of heat released within the body. This allows the body to feel warmer. Also, ‘shivering’, a reflex contraction in the skeletal muscles will help to increase the body temperature. If the mechanism fails, there is no way for the skin’s temperature to go back to the norm …show more content…
However, I conclude that negative feedback mechanism carries a higher weight of vitality due to the fact that the body requires more of the balance, the ‘see-saw’ to allow the body to function better. If there is no balance, the body will begin to rot internally, and this is dangerous to the individual’s health.
Faci, I have a few questions to ask you:
1. In the pituitary gland, the number of hormones released is based on the stimulus. Like is more water is taken into the body, less ADH is released. Does this apply to hypothalamus as well? If there is more water taken into the body, more releasing hormones are released?
2. For muscle contraction, I do not get the relationship between the length of the muscle and the tension produced. Like for isometric, the length of muscle remains the same while not enough tension is produced for the movement, that means there is a strain on the muscles? For isotonic, the muscles length changes but the tension remains constant. I do not quite get that.
3. In the exams, when they ask us to identify the positions like lateral, medial, proximal etc, and say it is not according to SAP, do I follow the picture then? For instance, it is a person lying on the floor with the face on the floor and they point to the back and the question asks what position it is, it's anterior or posterior
As for childbirth, positive feedback mechanism prepares the uterus for a natural birth by amplifying the response but after that process, it the negative feedback mechanism which brings the uterus back to normal. Negative feedback mechanism aids in our body greatly where it constantly works to ensure our body is in the right condition to function. If the mechanism fails, our body will not be at its best to function and this serves as a great danger to the body. For example, a person is in a cold environment with a thin set of clothing, the skin naturally begins to shiver. The skin arterioles constrict, and the shunt vessels dilate. Less blood flows through blood capillaries in the skin. This reduces the heat lost by convection, conduction, and radiation. Sweat glands become less active, resulting in the decreased production of sweat. As less water in the sweat evaporates from the surface of your skin, less latent heat of vaporization is lost from the body. The metabolic rate increases to increase the amount of heat released within the body. This allows the body to feel warmer. Also, ‘shivering’, a reflex contraction in the skeletal muscles will help to increase the body temperature. If the mechanism fails, there is no way for the skin’s temperature to go back to the norm …show more content…
However, I conclude that negative feedback mechanism carries a higher weight of vitality due to the fact that the body requires more of the balance, the ‘see-saw’ to allow the body to function better. If there is no balance, the body will begin to rot internally, and this is dangerous to the individual’s health.
Faci, I have a few questions to ask you:
1. In the pituitary gland, the number of hormones released is based on the stimulus. Like is more water is taken into the body, less ADH is released. Does this apply to hypothalamus as well? If there is more water taken into the body, more releasing hormones are released?
2. For muscle contraction, I do not get the relationship between the length of the muscle and the tension produced. Like for isometric, the length of muscle remains the same while not enough tension is produced for the movement, that means there is a strain on the muscles? For isotonic, the muscles length changes but the tension remains constant. I do not quite get that.
3. In the exams, when they ask us to identify the positions like lateral, medial, proximal etc, and say it is not according to SAP, do I follow the picture then? For instance, it is a person lying on the floor with the face on the floor and they point to the back and the question asks what position it is, it's anterior or posterior