The treatment successfully decreases his blood pressure to within the normal range. What is the mechanism of the drug's action?

A. Stimulation of muscarinic receptors in the SA node

B. Inhibition of $\alpha_1$ receptors on vascular smooth muscle

C. Stimulation of $\beta_1$ receptors in ventricular muscle

D. Stimulation of nicotinic receptors in the SA node

参考答案与解析：

相关试题

What is the largest blood vessel?

What is the largest blood vessel?A. AortaB. ArteryC. CapillaryD. Veins

  • 查看答案

    • Under stress, people's blood pressure go

    [单选题]Under stress, people's blood pressure goes up, _________their race or sex.A． whicheverB． no matter howC． whetherD． no matter what

  • 查看答案

    • In( )to his brother， he was always considerate in his treatment of others.

    [单选题]In( )to his brother， he was always considerate in his treatment of others.A

  • 查看答案

    • what is the maximum blood alcohol concer

    [单选题]what is the maximum blood alcohol concertration (BAC) rate on board ?

  • 查看答案

    • Blood pressure helps move-|||-blood (46) __ your body.It is-|||-often(47) __ by putting a wide-|||-b

    Blood pressure helps move-|||-blood (46) __ your body.It is-|||-often(47) __ by

  • 查看答案

    • Many clinics across the country ___ exercise as a treatment for a range of conditions, including dep

    Many clinics across the country ___ exercise as a treatment for a range of condi

  • 查看答案

    • The king maintained order within the bounds of his ___.

    The king maintained order within the bounds of his ___.A. lobbyB. peerC. nuisanc

  • 查看答案

    • What was the normal price of the T£­shir

    [单选题]What was the normal price of the T-shirt?A．$15B．$30.C．$50.

  • 查看答案

    • What was the normal price of the T£­shir

    [单选题]What was the normal price of the T-shirt?A． ＄15B． ＄30C． ＄50

  • 查看答案

    • What was the normal price of the T£­shir

    [单选题]What was the normal price of the T-shirt?A．$15B． $30C． $50

  • 查看答案