Question

A condition in which the body's internal environment remains relatively constant within limits is
(a) Hematoma
(b) Haemopoiesis
(c) Homeostasis
(d) Hemostasis

Answer 1

Hint: It is the tendency of our body to maintain a stable relatively constant environment. Our body temperature is comparatively very close to room temperature i.e 98.6 degrees Fahrenheit/ 37.0 degrees celsius.

Complete step by step answer:
- In addition to temperature our body maintains homeostasis for many other reasons also. The concentration of various ions in the blood must be kept steady along with pH and the concentration of glucose and if there will be increment or decrement in the value, we will get caught up getting sick.
- Stomach pH value is different from that of surrounding organs and each individual cell maintains ion concentration different from that of the surrounding fluid. Therefore maintaining homeostasis at each level is the key function of our body.
So, the correct answer is, ”homeostasis”.

Additional information:
- Maintaining homeostasis usually involves negative feedback loops. These loops act to resist the stimulus that activates them. For example: if the temperature of the body is too high, negative feedback will act to bring it back down towards the setpoint ($98.6^\circ \ F$/ $37.0^\circ \ C$).

- Hematoma: Is defined as a collection of blood outside of blood vessels due to disease or any trauma- injury or surgery
- Haemopoiesis: The bone marrow is the chief source of blood cells in children. Therefore the production of new blood cells is called Haemopoiesis.
- Hemostasis: Is the physiological process that leads to the prevention and stoppage of bleeding within a damaged blood vessel.

Note: In a negative feedback loop, the first temperature will be detected by a sensor (nerve cells with endings in the skin and brain) and then goes to a temperature regulatory control center in the brain where information is processed and activates an effector like a sweat gland whose job is to oppose the stimulus by bringing body temperature down.