It is inherited in an autosomal recessive manner and is caused by a mutation in the HBB gene. The mutation that causes hemoglobin E disease primarily occurs in Southeast Asian populations, and rarely in Chinese populations. Most people with HbE disease do not need any treatment.
CHAPTER 27 Homework Review ï· The ability of sperm cells to move along the ductus deferens is due to ________. peristaltic contractions ï· Prostate cancer is _______.sometimes a slow-growing cancer that may never represent a threat to the patient ï· Erection of the penis results from ________.a parasympathetic reflex ï· Why doesn't semen enter the ...
Propels live sperm from epididymis to urethra. The ductus deferens is a long (18 inches) tube that runs from epididymis upward anterior to pubic bone into pelvic cavity, loops over ureter and descends posteriorly along bladder, where it joins with seminal vesicle to form ejaculatory duct.ropels live sperm from epididymis to urethra. The ductus deferens is a long (18 inches) tube that runs from epididymis upward anterior to pubic bone into pelvic cavity, loops over ureter and descends posteriorly along bladder, where it joins with seminal vesicle to form ejaculatory duct.