Details for Beta Receptors are as follow:
The three types of beta receptors in the human body are beta-1 (β1, beta sub 1𝛽1), beta-2 (β2, beta sub 2 𝛽2), and beta-3 (β3, beta sub 3 𝛽3). These receptors are involved in many physiological processes, including heart function, muscle relaxation, and regulating adipose tissue.
Beta-1 receptors
Found in the heart and adipose tissue
Make up about 95% of the sinoatrial node and 70–80% of the ventricular wall
Help with the sympathetic response by adjusting heart and kidney function
Increase heart rate and contractility
Increase renin release in the kidneys, which increases blood volume and blood pressure
Relax smooth muscles in the blood vessels, uterus, and airways
Less sensitive to norepinephrine than epinephrine
Beta-3 receptors
Also known as the "atypical" beta adrenergic receptor
Found on the bladder
Insensitive to commonly used beta-adrenergic receptor antagonists
Activation of these receptors relaxes the smooth muscle in the bladder
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