Mention the location and the functions of the following:
i.Fallopian tube
ii.Sympathetic nerves
iii. Hepatic portal
Dear Student,
Fallopian Tube-
Fallopian Tube-
- Location- Fallopian tubes are long narrow ducts located in the abdominal cavity of the human female. It has four parts- Fimbria, Infundibulum, Ampulla, and Isthmus.
- Functions-
- Fertilization (the fusion of male & female gametes) takes place here.
- Fertilized ovum travels towards the uterus through the fallopian tube.
- Occasionally ectopic pregnancy occurs here.
- Location-
- The Sympathetic nervous system has paired chains of ganglia and other visceral ganglia.
- Its preganglionic fibers are shorter than the postganglionic fibers.
- Its preganglionic fibers originate from the spinal cord.
- Functions-
- Each preganglionic fiber forms synapses with many postganglionic fibers, so many organs are affected.
- Its postganglionic fibers are adrenergic i.e., release the neurotransmitter noradrenaline.
- It stimulates the medulla of the adrenal glands to release epinephrine and norepinephrine.
- Location- Hepatic portal system consists of veins carrying blood from digestive parts like the stomach, intestine, spleen, etc, to the liver.
- Functions- It carries substances absorbed from the intestines to the liver where their detoxification takes place before returning to the heart.