Question

A wider region, called ampulla, is not a part of which of the following structures?
A. Mammary gland
B. Fallopian tube
C. Vas deferens
D. Testes

Answer 1

Ampulla means any duct or tube of the body. There are various ducts in the body like- ducts present in the mammary gland and the fallopian tube has a very important role in this duct ampulla as ampullary-isthmic junction is the site for fertilization. Also, ampulla is present in the ventral part of duodenum.

Complete answer:
Option A: Mammary gland- mammary gland do have ampulla as the ducts opening to the outer or lobules of milk are nothing but ampullary ducts.
Option A is not the correct answer.
Option B: fallopian tube- fallopian tube has a crucial duct known as ampullary- isthmic junction as it is the site for fertilization, where sperm meets the ovum for fertilization and later, they slip off to the uterus for implantation.
Option B is not the correct answer.
Option C: Vas deferens- vas deferens also have an ampulla duct as a medium for nutrient transport or nutrient accumulation.
Option C is not the correct answer.
Option D: Testes- testes is the only organ which does not have an ampulla duct.
Option D is the correct answer.

Hence, Option D is the correct answer.

Note:
In humans, the testes are a part of the male reproductive system. Testes are the storehouse of sperm and formation of sperm also takes place in testes. The testes temperature is slightly dilated than the normal body temperature as the sperm requires different body temperatures to form. Seminal vesicles carry sperm to urethra.