Coast to Coast
Coast to Coast
Humans are a Homeostatic organism. Homeostasis is the term used to describe the body’s ability to maintain a stable internal environment e.g. Temperature.
Homeo = Same
Stasis = Static, stationary (still)
There are two ways in which the body achieves an internal stable environment, negative and positive feedback. However the body uses negative feedback on a daily bases while the positive feedback is for more drastic events such as readying the body for labour by1 the body producing the hormone oxytocin.
The diagram on the left shows how the negative feedback systems work for the starting stimulus until the ending response.
2If the stable state (Set point) is altered, a receptor recognises the change and sends information to the modulator which sends the information to the effector(s) which produce the response(s) until the set point is reached again; this then stops the feedback loop which allows for stabilising within the body. E.g. the weather outside is cool, the body receptor is the skin, which tells the brains its cool, the brain tells the Erector muscles underneath the skins hair and the response is that Erector muscles makes the hair stand up for insulation against the cold.
3Thermoregulation is the process that allows the human body to maintain its core internal temperature. All thermoregulation mechanisms are designed to return the body to homeostasis. 4The hypothalamus is in the brain and is directly responsible for the core temperature and nerve impulses for the receptors in the skin. This allows the brain to get quick and direct information from the skin as the skin is the exposed tissue that will be able to feel the change in temperature due to wind or being placed in water or even the sun radiating down on to its surface.
The first stage of the Coast to Coast is unlikely to be the stage where the athletes will become at risk of ineffective thermoregulation. In the Coast to Coast example in the student resource it states that
Humans are a Homeostatic organism. Homeostasis is the term used to describe the body’s ability to maintain a stable internal environment e.g. Temperature.
Homeo = Same
Stasis = Static, stationary (still)
There are two ways in which the body achieves an internal stable environment, negative and positive feedback. However the body uses negative feedback on a daily bases while the positive feedback is for more drastic events such as readying the body for labour by1 the body producing the hormone oxytocin.
The diagram on the left shows how the negative feedback systems work for the starting stimulus until the ending response.
2If the stable state (Set point) is altered, a receptor recognises the change and sends information to the modulator which sends the information to the effector(s) which produce the response(s) until the set point is reached again; this then stops the feedback loop which allows for stabilising within the body. E.g. the weather outside is cool, the body receptor is the skin, which tells the brains its cool, the brain tells the Erector muscles underneath the skins hair and the response is that Erector muscles makes the hair stand up for insulation against the cold.
3Thermoregulation is the process that allows the human body to maintain its core internal temperature. All thermoregulation mechanisms are designed to return the body to homeostasis. 4The hypothalamus is in the brain and is directly responsible for the core temperature and nerve impulses for the receptors in the skin. This allows the brain to get quick and direct information from the skin as the skin is the exposed tissue that will be able to feel the change in temperature due to wind or being placed in water or even the sun radiating down on to its surface.
The first stage of the Coast to Coast is unlikely to be the stage where the athletes will become at risk of ineffective thermoregulation. In the Coast to Coast example in the student resource it states that