ANATOMY AND PHY Discussion Post
Topic: “Where and how cells produce ATP?”
· Post must be 350-400 words.
· Include critical thinking and research.
· IMPORTANT NOTE: References are expected to create a substantial main post. Cite the source when you summarize or paraphrase or have direct quotes.
Peer responses to:
“For this post I’m going to write about body temperature. I feel like my life over the last 10 months has basically been regulating temperature for my wife and now my new born. She was always too cold and then too hot and now the new born is the same way! All humans and many animals have a hypothalamus, found in the middle of the brain.Sweat gets a bad reputation, even though it plays an important role in cooling down our bodies when we get too hot. But how, exactly, does your body know when to start sweating? It knows because a part of your brain, called the hypothalamus, tells it to. The hypothalamus does many things, but two of its most important jobs are to maintain homeostasis and to control certain hormones. Homeostasis is very important to all animals, including humans. Let’s think about homeostasis in terms of body temperature. Most animals maintain, or hold, their temperature at a certain level. For humans, this is about 98.6°F. When your hypothalamus senses that you’re too hot, it sends signals to your sweat glands to make you sweat and cool you off. When the hypothalamus senses that you’re too cold, it sends signals to your muscles that make your shiver and create warmth. This is called maintaining homeostasis. In the above diagram it shows the temperature in your body, like the temperature in your home, is a balance between different cooling and heating systems. The body loses heat in four ways:
1. Radiation: This is the emission of infrared rays by moving molecules.
2. Conduction: This is the transfer of kinetic energy from molecule to molecule as they collide with one another
3. Convection: This is the transfer of heat to a moving a fluid—Blood, air or water.
4. Evaporation: This is the change from a liquid to a gas state. “
AND....
“On a Typical day, the average adult will take in about 2500 ml almost 3 quarts of aqueous fluids. Although most of the intake comes through the digestive tract, about 230 ml per day is generated metabolically, in the last steps of aerobic respiration. Additionally, each day about the same volume 2500 ml of water leaves the body through different routes: most of this lost water is removed as urine. the urine kidneys also can adjust blood volume through mechanisms that draw water out of the filtrate and urine. the water levels in the body: They conserve water if you are dehydrated, and they can make urine more dilute to expel excess water if necessary. water is lost through the skin evaporation from the skin surface without overt sweating and from air expelled from the lungs. this type of water loss is called insensible water loss is called insensible water because a person is usually unaware of it. Drinking water is considered voluntary. so how is water intake regulated by the body? Consider someone who is experiencing dehydration, a net loss of water that results in insufficient water in blood and other tissues. the water that leaves the body, as exhaled air, sweat, or urine, is ultimately extracted from blood plasma. As the blood becomes more concentrated, the thirst response a sequence of physiological processes is triggered. osmoreceptors are sensory in the thirst center is the hypothalamus that monitors the concentration of solutes ( osmolality) of the blood. If blood osmolality increases above its deal value, the hypothalamus transmits signals that result in a conscious awareness of thirst. Water loss from the body occurs predominantly through the rental system. A person produces an average of 1.5 liters 1.6 quarts of urine per day. Although the volume of urine varies in response to hydration levels, there is a minimum volume of urine production required for proper bodily functions. The kidneys excrete 100 to 200 millimoles of solutes per day to rid the body of a variety of excess and other water-soluble chemicals wastes, most notably creatine, urea, and uric acid.”
*just 2 responses in total. 150-200 words each.
Thank you.
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