Questions and Answers
What is the vasomotor center?
Located in the medulla in the brain; stimulates constriction of arterioles.
What is vasoconstriction?
Increases blood pressure.
What is vasodilation?
Relaxes and decreases blood pressure.
What are the receptors that affect the vasomotor center?
Signup and view all the answers
What are baroreceptors?
Signup and view all the answers
What are chemoreceptors?
Signup and view all the answers
What do epinephrine and norepinephrine do?
Signup and view all the answers
What is renin-angiotensin?
Signup and view all the answers
Study Notes
Vasomotor Center Overview
- Located in the medulla of the brain; central to cardiovascular regulation.
- Responsible for stimulating the constriction of arterioles, directly influencing blood pressure.
Key Functions
-
Vasoconstriction:
- Results in increased blood pressure through narrowing of blood vessels.
-
Vasodilation:
- Causes relaxation of blood vessels, leading to a decrease in blood pressure.
Receptors Influencing the Vasomotor Center
-
Baroreceptors:
- Sensitive to changes in blood pressure; inhibit vasomotor center activity when pressure increases.
-
Chemoreceptors:
- Detect oxygen depletion and carbon dioxide accumulation; stimulate the vasomotor center when oxygen levels drop.
-
Epinephrine/Norepinephrine:
- Hormones released in response to stress; enhance blood pressure by promoting vasoconstriction.
-
Renin-Angiotensin System:
- Involved in long-term regulation of blood pressure through hormonal pathways that adjust blood volume and vascular resistance.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz covers essential concepts related to the vasomotor center, located in the medulla of the brain. It includes definitions of key terms such as vasoconstriction and vasodilation, along with their effects on blood pressure. Test your knowledge and understanding of how receptors influence the vasomotor center!
