NSG 3315 Lecture Notes - Lecture 33: Acetylcholine, Spasm, Peripheral Neuropathy
Document Summary
Divided into 2 parts: fundus - body posterior urethra - neck. Detrusor muscle muscle of micturition of passage of urine when it contracts, urine leaves the bladder submucosal layer of loose connective tissue inner mucosal lining of transitional epithelium serves as a a barrier between urine and the blood. 576 internal sphincter - continuation of detrusor muscle; opens up to allow urine to pass through external sphincter - stops urination. Involuntary control (ans) parasympathetic nervous system promotes bladder emptying contraction of bladder wall relaxation of internal sphincter. Acetylcholine is a neurotransmitter that plays a huge role in the function of the ans is regards to urine control. Urination is a involuntary act in infants and young children. As the child grows, the bladder can increase its capacity. Urine is held in the bladder due to an obstruction. May occur in the bladder neck, urethra, or external urethral meatus.
