Question

The stroma of the ovary consists of nerves, blood vessels, muscle fibres, and a type of protein is called,
A. Collagen
B. Albumin
C. Globulin
D. Fibrin

Answer 1

The ovary is the female reproductive organ that produces ovum every month, and if the eggs are fertilized, it leads to the zygote formation, and if not it leads to menses. The stroma of the ovary is present in the ovarian cortex between the ovarian follicles. It comprises the most abundant protein of the body.

Complete step by step answer: Ovaries being the female gonads are covered by a capsule; the outer part being the cortex and inner being the medulla. It consists of dense connective tissues called tunica albuginea. The stroma of the ovary is present in the ovarian cortex between the ovarian follicles. It is a special type of connective tissue that consists of the most part of the spindle-shaped stromal cells. The stroma also consists of blood vessels and other regular connective tissues like reticular fibres and collagen. Collagen is the most abundant protein in the body. They are made up of amino acids such as glycine, proline, hydroxyproline, arginine, etc. Ovarian stroma has a very high number of stoma cells that are distributed in a way that the tissue appears to be whorled.
i. Albumin is a globular protein. In general, they are transporter proteins that attach to the ligand. Human serum albumin is present in the blood plasma that allows transport of many molecules and maintains the oncotic pressure, whereas ovalbumin is a storage protein.
ii. Globulins are also globular proteins. Some are made in the liver, whereas other globulins are made by the immune system. Alpha 1 globulin, alpha 2 globulin, beta globulin and gamma globulin are the types of globulin proteins and out of which, gamma globulins are immunoglobulins also called the antibodies.
iii. Fibrin is the activated form of the fibrinogen, a non-globular protein that is involved in the blood clotting process.
Hence, the correct answer is option A.

Note: Ovarian stroma has a very high number of stoma cells that are distributed in a way that the tissue appears to be whorled. The stromal cells can sometimes secrete estrogen that is associated with maturing follicles.