Temperature homeostasis and diet

Question 1

What are the 4 ways we lose body heat?

Answer 1

Convection of moving air
Conduction - sitting etc
Evaporation
Radiation

Question 2

How is body temp controlled?

Answer 2

Monitored by thermoreceptors in skin and brain
Regulatory system in hypothalamus

Question 3

How does the body cool down?

Answer 3

Vasodilation
Sweating
Behavioural responses

Question 4

How does the body warm up?

Answer 4

Vasoconstriction
Shivering
Heat conservation (body hair)

Question 5

What is basal metabolic rate?

Answer 5

minimum level of energy required to function

Question 6

What is the average daily protein requirement?

Answer 6

0.75g per kg of body weight

Question 7

What is the problem of obesity?

Answer 7

Risk of CVD, cancer and T2
Decrease mobility, life quality land lifespan
Costs the NHS £5bn/annum

Question 8

What is the issue with eating disorder?

Answer 8

1.6 mil in Uk
Costs £15 bn per annum
Risk of muscle and bone problems, heart failure and seizures
Fertility problems, life quality and life span

Question 9

What are macronutrients?

Answer 9

Eg proteins, fats and carbs

Question 10

What are micronutrients?

Answer 10

Vitamins and minerals

Question 11

What are the 8 functions of proteins?

Answer 11

Structure
Enzymes
Hormones
Antibodies
Fluid balance
Acid base
Channel Pumps
Transport

Question 12

What are the functions of amino acids?

Answer 12

Synthesis of proteins
Precursors for other molecules

Question 13

How do cells use carbohydrates?

Answer 13

Extracellular matrix
Cell scaffold
Transmission of info

Question 14

What are the non energy related functions of fat?

Answer 14

Source of fatty acid
Membrane synthesis
Carriers for fat-soluble vitamins
Synthesis of steroid hormones

Question 15

What is anaemia?

Answer 15

Iron or B12 deficiency
symptoms
- tachycardia
- angina
- fatigue