Question
Question: Assertion The female genitalia includes mons pubis, labia majora and labia minora. Reason The...
Assertion
The female genitalia includes mons pubis, labia majora and labia minora.
Reason
The glandular tissue of each breast is divided into 5-10 mammary lobes.
A. Both Assertion and reason are correct and Reason is the correct explanation of Assertion.
B. Both Assertion and reason are correct, but the Reason is not the correct explanation of Assertion.
C. Assertion is correct but Reason is incorrect.
D. Both Assertion and reason are incorrect.
Solution
The female external genital component forms a large part of the female perineum and is collectively known as the vulva. In humans, the mammary glands are paired and located on the chest wall of the abdomen. The mammary glands are made up of glandular, fibrous and adipose tissue.
Complete answer:
Let’s study about female external genitalia and mammary glands for answering the questions.
Vulva is the female external genitalia. It consists of the anterior or genitourinary sinuses, which take the form of a depression and are located in front of the anus.
It has two openings, the upper outer opening of the urethra and the lower vaginal opening. The front is oily and covered in pubic hair. This section is called the mons pubis. Two large thick-walled folds of skin form the edges of the vulva. These are the labia and contain sebum glands.
Between the labia majora there are two small folds called the labia minora. Labia minora joins four times behind.
Mammary glands -In humans, the mammary glands are paired and located on the chest wall of the abdomen. They are modified sweat glands. In men it is basic, in women it is well developed. The hormones oestrogen and progesterone are responsible for their development. The outside of the breast is covered with skin, and in the middle is a grain of erectile tissue. The nipples are surrounded by a pigmented area called the areola. The areola has many sebum glands called areolar glands. Breast milk is made from organic, inorganic compounds, and water. Iron poor milk. It mainly consists of fat droplets, lactase, casein, vitamins and minerals such as sodium, potassium, calcium, phosphate and others. The mammary glands are made up of glandular, fibrous and adipose tissue.
Glandular tissue: This tissue consists of about 20 lobes and each lobe has 15-20 lobes. Each lobule consists of a group of alveolar glands and a unit that forms the milk ducts. These ducts widen to form sinuses that store milk during breastfeeding. Each sine opens out of a narrow channel with a diameter of 0.5 mm.
So from the above points it’s clear that assertion is correct and reason is incorrect.
So, the correct answer is “Option C”.
Note: Similar to the male penis, the clitoris is present in women, which consists of erectile tissue. There are two Bartholin's glands on either side of the vaginal opening. These glands secrete a thick, clear fluid that acts as a lubricant during intercourse. The area under the quadriceps and anus is the perineum.
After the baby is born, the anterior pituitary secretes oxytocin. Which is responsible for milk production and then stimulates secretion.