Barocreceptors Reflex

Question 1

What controls blood pressure short term and long term?

Answer 1

Short term: baroreceptor reflex
Long term: hormonal control

Question 2

How is blood pressure controlled?

Answer 2

Baroreceptors in the walls of the arteries in the arch, aorta and carotid sinus sense a change in pressure. These send electrical impulses to the SA and AV node to either have sympathetic innervation or parasympathetic innervation

Question 3

What is the parasympathetic response to change in blood presssure?

Answer 3

Heart rate decreases through release of acetylcholine.

Question 4

What is the sympathetic response to a change in blood pressure?

Answer 4

Increase heart rate through release of noradrenaline. The noradrenaline cause an increase in the force of contraction.

Question 5

What is hypertension?

Answer 5

High blood pressure.

Question 6

What is hypotension?

Answer 6

Low blood pressure (less than 90/60 mmHg)