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 ...
Smooth muscle cells are responsible for helping food pass through the digestive system and for pushing food up into the esophagus when vomiting occurs. In the urinary system, smooth muscle cells contract to push urine into the urethra and out of the body. When a woman gives birth, the smooth muscle cells found in the uterus contract to push the baby out of the birth canal. Smooth muscle cells also affect the diameter of the blood vessels.