{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture2 - Lecture#2 15:15:00 Nervous System...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture #2 08/07/2008 15:15:00 Nervous System I -neurotransmitters D. Neurotransmitters and their receptors Can be excitatory (causing depolarization of the membrane on post synaptic dendrite) Or inhibitory (causing hyperpolarization) 2 types of receptors o ionotropic (exerts control)= ligand gated ion channels hooked up to receptors rapid effects o metabotropic = activates signal transduction pathway when NT binds to receptor (work more slowly than ionotropic receptors) 1.Acetylcholine (Ach) a.) nicotinic cholinergic receptor i. Ionotropic ii. Excitatory iii. Neuromuscular junction (where nerve meets skeletal muscle) iv. Autonomic neurons (involuntary stuff) v. Central nervous system (CNS) vi. Nicotine acts as agonist (opposite of antagonist; mimics Ach) b.) Muscarinic cholinergic receptors vii. Metabotropic viii. Excitatory or inhibitory ix. Smooth and cardiac muscle and endocrine and exocrine glands x. CNS xi. Muscarine acts as an agonist 2. Ghitamate- excitatory NT on CNS
Background image of page 1

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

View Full Document Right Arrow Icon
3. GABA- inhibitory NT on CNS 4. Norephinepherine(NT) + epinephrine (hormone)= adrenaline
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}