click below
click below
Normal Size Small Size show me how
Phys Lect 17
Question | Answer |
---|---|
ANS effect: Pupil | Symp: Dilation. Parasymp: Constriction. |
ANS effect: Ciliary Muscle | Symp: Relaxation. Parasymp: Contraction. |
ANS effect: Nasal, lacrimal, GI, and salivary Glands | Symp: None/Inhibition. Parasymp: Secretion. **Parasymp causes amylase secretion |
ANS effect: Sweat glands | Symp: Secretion. Parasymp: none. |
ANS effect: Heart rate & contraction | Symp: Increase. Parasymp: Decrease. |
ANS effect: Lungs (Bronchioles) | Symp: Dilation. Parasymp: Constriction. |
ANS effect: Lungs (glands) | Symp: decrease (alpha1) or increase (beta2). Parasymp: secretion. |
ANS effect: GI sphincters | Symp: contraction. Parasymp: Relaxation. |
ANS effect: Liver, Pancreas, Adrenal Medulla | Symp: Gluconeo/glycogenolysis (liver), Decreased secretion (pancreas), secrete epi (adrenal). Parasymp: None |
ANS effect: Ureter | Symp: Contraction. Parasymp: Relaxation. |
ANS effect: Detrusor Muscle (bladder) | Symp: Relaxation. Parasymp: Contraction. |
ANS effect: Uterus | Symp: Contraction. Parasymp: Variable. |
ANS effect: Genitalia | Symp: Ejaculation/vaginal contraction. Parasymp: Erection (via ACh and NO). |
ANS effect: Adipose cells | Symp: Lipolysis (Energy use during high stress, consumption by muscle cells). Parasymp: None. |
Pre and Post ganglionic neurons of the sympathetic NS | Pre(Short): Cell Body: IML. Travel out ventral root, white rami, sympathetic trunk. Post(long): travel from sympathetic chain to the target tissues. |
ANS effect: Blood Vessels | Symp: Dilation/constriction with varying levels of symp. ParaSymp: NONE (NO INFLUENCE). |
Adrenal Gland with ANS | Serves as a modified sympathetic ganglion. **Chromafin cells recieve presynaptic neurons and release Epi/Norepi. |
ANS effect on Heart at rest | Strong Parasymp tone Weak symp tone **Tone is rate of firing. |
ANS effect on Heart during exercise | Decreased parasymp tone (90bpm). (usually Feedforward b/c you anticipate the exercise and HR increases). **Vigorous exercise: Increased symp tone (130 bpm) |