Quiz #4 Anus, Rectum, and Prostate Flashcards
How long is the rectum?
12cm
Prostate secretes
thin, milky alkaline fluid that helps sperm viability
Seminal vesicles secrete
fluid rich in fructose which nourishes sperm. Contains prostaglandins.
How long are the anal canal and rectum combined?
16cm
How long is the sigmoid colon?
40cm
Sigmoid colon begins and ends at
Begins at iliac flexure of descending colon, ends at rectum
Infants usually have stools
after each feeding— termed the gastrocolic reflex
Voluntary control of the external anal sphincter occurs
when the nerves around the area are fully mylenated- 1.5—2 years of age
When does prostate undergo rapid increase in size?
Puberty— increase >2x
How many men have BPH at age 40?
1 in 10
Cultural and genetic risks for prostate cancer
African American/African Jamaican
First degree relative (2-3x more likely)
BRCA2 mutations- increased risk for more aggressive prostate cancer
Diet high in red/processed meat, animal/sat fats, and dairy products
Obesity increases risk of aggressive PC
Risk factors for late detection of prostate cancer
Uninsured/medicaid
Racial/ethnic minorities
When should men receive information about PC testing?
Age 50 in normal risk groups, 45 in high risk, 40 in very high risk (multiple family members)
Colorectal cancer highest in what groups?
African-American women
Colon cancer screening recommendations
Beginning at 50, colonoscopy every 10 years and fecal immunochemical test every year.