Structure And Function

Question 0

Identify the ultrastructure of the urethra and its muscle layers

Answer 0

Three coats - muscular, erectile, mucous
Males - 4 parts of urethra (pre-prostatic, prostatic, membranous, spongy)
Internal urethral sphincter - smooth muscle
External urethral sphincter - striated voluntary

Question 1

Identify the histological structure of the kidney and the nephron

Answer 1

Glomerulus - simple squamous
PCT - simple columnar, mitochondria, brush border
LoH - simple squamous/simple cuboidal
DCT - simple cuboidal, mitochondria (macula densa - columnar)
Collecting duct - simple cuboidal
Ureter/Bladder/Urethra - transitional

Question 2

Identify the musculature of the bladder

Answer 2

Detrusor muscle - smooth muscle fibres arranged in spiral, longitudinal, circular bundles