Making a Difference, Here & Beyond
The community invests in Dell Med. In return, it’s our responsibility — one we take seriously — to be agents for change and to show real impact.
More Information
Creating a New Kind of Doctor
We recruit and train physician leaders as comfortable taking on systemic challenges in health as caring for individual patients.
Improving Care. Improving Health.
We’re here to make health — including health care — better. The end goal is a complete revolution in how people get and stay healthy.
Discovery to Impact — Faster
We reward creative thinking and encourage rapid experimentation, using collaborative programs to speed promising research to market.
More Information
Let’s Do Big Things Together
True health demands that the whole work in harmony, which is why we’re dedicated to partnership. Indeed, we can’t achieve our goals without it.
Meet Dell Med
We’re rethinking the role of academic medicine in improving health — and doing so with a unique focus on our community.
More Information
Make an Appointment Directory Give Faculty Students

Sympathetic Nervous System

What are the actions of autonomic receptors in the body?

One of our medical students and a Dell Med professor — Aydin Zahedivash and Michael Lee, PhD — created this interactive figure depicting the actions as a learning tool. Click around and explore!

The receptors are represented as color-coded circular orbs. To see the actions of a specific receptor type, simply click on one of its receptor orbs.

You can also see standard agonists and antagonists to these receptors by clicking the agents. If an agent is an agonist at a receptor, the receptor type and its actions will light up while the others fade away. If an agent is an antagonist at a receptor, the receptor type and its actions will light up, although the actions are crossed because of the negating effects.

Submit questions or feedback to Aydin and Michael.

image/svg+xmlβ 1 SA/AV Nodes Conduction System Myocardium ↑ Conduction Velocity (+++) ↑ Heart Rate (++) ↑ Contractility (+++) α 1 Ejaculation(+++) α 1 Vasoconstriction (++) β 2 Broncho-Dilation (++) β 1 ↑ ReninSecretion (++) β 2 Detrusor Relaxation (+) α 1 Trigone and Sphincter Contraction (++) β 2 Uterus Relaxation α 1 Uterus Contraction α 1 Iris Radial Muscle Contraction ⇒ Mydriasis (++) Testα 1 Sweat Glands ↑ Secretions (++) m