Lab Exam 2 Human Health

Question 1

What is the higher value in blood pressure?

Answer 1

Systolic and represents the pressure in the arteries when the ventricles contract and force blood into the heart

Question 2

What is the lower value in pressure?

Answer 2

Diastolic and measures the arteries during the time when ventricles fill with blood

Question 3

Why does blood pressure differ among individuals?

Answer 3

Differs because of genes, fitness, diet, and health

Question 4

What does a poor score on a fitness test mean?

Answer 4

Means that the heart is not used to changing active environments

Question 5

Why are standing, resting, and exercising heart rates different?

Answer 5

The demand for oxygen and blood flows change depending on activity

Question 6

Why are athletes capable of delivering more oxygenated blood to their body?

Answer 6

Because the heart(a muscle) is more efficient and well adjusted to delivering blood throughout the body

Question 7

Why does the heart rate of endothermic, warm-blooded organisms, such as man, remain relatively unaffected by changes in the environmental temperature?

Answer 7

Because organisms(endothermic) has homeostatic capability in their body to regulate their body despite the changing environment

Question 8

How to ectothermic, cold blooded organisms, such as the Daphnia regulate their temperature?

Answer 8

They dint have internal regulation capabilities so they have to move away from hot or cold environments or they have to change their heart rate to change their blood flow