Vasomotor response

Definition

Vasomotor response is the physiological regulation of blood vessel diameter, which affects blood flow and pressure. This response can be influenced by various drugs, including those affecting the urinary system.

5 Must Know Facts For Your Next Test

1. Vasomotor responses are controlled by the autonomic nervous system, particularly through sympathetic and parasympathetic pathways.
2. Certain urinary stimulants can induce vasomotor responses that impact renal blood flow and glomerular filtration rate.
3. Alpha-adrenergic agonists can cause vasoconstriction, while beta-adrenergic agonists typically lead to vasodilation.
4. Vasomotor responses play a crucial role in maintaining homeostasis during changes in posture or hydration status.
5. Pharmacological manipulation of vasomotor responses can be used therapeutically to manage conditions like hypertension or shock.

Review Questions

• How do alpha-adrenergic and beta-adrenergic agonists affect vasomotor responses differently?
• Why is understanding vasomotor response important in the pharmacological treatment of urinary disorders?
• Which part of the nervous system primarily controls vasomotor responses?

Related terms

Autonomic Nervous System:

A part of the nervous system that controls involuntary actions and regulates bodily functions such as heart rate, digestion, and respiratory rate.

Alpha-Adrenergic Agonist: Drugs that stimulate alpha receptors leading to effects like vasoconstriction.

Renal Blood Flow: The volume of blood delivered to the kidneys per unit time, crucial for kidney function.