Physio Lecture.docx - LECTURE Second exam ANS sensory...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
LECTURE 09/20/2017 Second exam : ANS, sensory nervous system, and motor system (maybe/maybe not) Autonomic Nervous System (ANS): The ANS is part of the nervous system that controls and innervates the internal organs (thoracic, abdominal, and pelvic cavities), sweat glands, the smooth muscles of blood vessels, etc. There are two parts: Parasympathetic (PNS) and Sympathetic (SNS) Effect of neurotransmitter depends on the type of receptor and location of receptor. The origin of sympathetic nervous system is T1-L2/L3 (Thoracolumbar) The parasympathetic nervous system originates from CN 3,7,9,10 AND S2-S4. PNS also known as the craniosacral nervous system. Types of receptors: Parasympathetic nervous system: Ach – cholinergic receptor (two types: nicotinic and muscarinic receptor) Sympathetic nervous system: Norepinephrine – Adrenergic receptors (Alpha, Beta, and Dopamine) PICTURE – SYMPATHETIC SYSTEM 1. Norepinephrine is released from the postganglionic system 2. Requires Alpha 1 and Beta 1 receptors a. Alpha 1 – adrenergic receptor located in smooth muscles of blood vessels, smooth muscles of the GI tract, sweat glands, and the sphincter of the urinary bladder. Preganglionic fiber travels through the sympathetic exchange and meets postganglionic fiber travels to internal organs Pre ganglionic releases Ach and post ganglionic released Norepinephrine Preganglionic fiber of SNS releases ACH which has cholinergic receptor on post ganglionic fiber. After binding with post it activates post ganglionic Synapsis occurs where inside the ganglion. Post ganglionic fiber releases Norepinephrine requires specific receptor in internal organs (Alpha 1 and 2, Beta 1 and 2) PICTURE – EFFECT OF NOREPINEPHRINE ON ALPHA 1 RECEPTOR Over secretion of norepinephrine, what kind of side effect may it have on blood pressure?
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern