B1 - Homeostasis

Question 0

What are the 4 things that need to be controlled?

Answer 0

Ion content

Sugar content

Water content

Temperature

Question 1

What is homeostasis?

Answer 1

All the functions of the body that try to maintain a constant internal environment

Question 2

What are the 2 ways that ion content is reduced by the body?

Answer 2

Some ions are lost in sweat

The kidneys remove any excess ions from the blood so that they can be exceeded in urine

Question 3

How do we increase ion content in our body?

Answer 3

Eating good with the required ions in it

Question 4

How is blood sugar level increased?

Answer 4

We eat more carbohydrates to put glucose in the blood

Question 5

How is the blood sugar level controlled in the body?

Answer 5

The hormone insulin maintains the right amount of glucose in the blood

Question 6

What are the 3 ways that water is lost from the body?

Answer 6

Through the skin as sweat

Out of the lungs in breath

As urine (from kidneys)

Question 7

How does the temperature of the environment you are in affect sweat and urine?

Answer 7

When the environment is hotter, you sweat more so you produce less urine so it will be more concentrated

The opposite is true for a cold environment

Question 8

How does exercise affect sweat and urine?

Answer 8

When you’re exercising, you sweat more so you produce less urine so it will be more concentrated

Also, more water will be lost through breath

The opposite is true for when you’re not exercising

Question 9

What internal temperature does the body need and why?

Answer 9

37 degrees C

Optimum temperature for enzymes to work at

Question 10

How is body temperature controlled?

Answer 10

A part of the brain is sensitive to the temperature of the blood passing through

If the blood is the wrong temperature, it can signal different parts of the body to do what they need to do to correct the temperature