Soc15: The Structure Of The Heart

Question 1

Cardio-Respiratory System?

Answer 1

The interraction of the heart and lungs to supply oxygen to muscles during exercise

Question 2

Cardiovascular

Answer 2

To do with the heart, blood vessels together

Question 3

Vasodilation

Answer 3

When veins swell up or dilate; widening of the internal diameter (lumen) of the blood vessels to allow increased blood flow

Question 4

Vasoconstriction

Answer 4

When veins shrink down; narrowing of the internal diameter (lumen) of the blood vessels to decrease blood flow

Question 5

Vascular Shunting

Answer 5

Process that increased blood flow to active areas during exercise by diverting blood away from inactive areas; achieved by vasodilation and vasoconstriction

Question 6

What rhythm does the heart beat as?

Answer 6

Beats in a ‘lub dub’ rhythm

Question 7

What are the 2 phases know as?

Answer 7

Systolic phase and Diastolic phase

Question 8

What happens in the Systolic phase?

Answer 8

Blood is pumped from both atria into the ventricles (lub)
Both the ventricles contract (dub)
Deoxygenated blood to leave the right ventriclec to the lungs via the pulmonary artery
Oxygenated blood in the left ventricle leave via the aorta to the body

Question 9

What happens in the Diastolic phase?

Answer 9

This is when the heart is relaxing and refilling with the atria with blood