Question

Which of the following does not secrete any hormone?
A) Spleen
B) Ovary
C) Testes
D) Pancreas

Answer 1

Hint Hormones are a chemically diverse set of molecules. Hormones can be classified into autocrine, paracrine, and endocrine-based on their point of release and targets. They can be divided into peptide, catecholamine, steroid, thyroid, vitamin D, retinoid, eicosanoids, and nitric oxide hormones based on their chemical structures.
Complete Step-by-step answer: Ovaries release estrogen, progesterone. An important role is played by these hormones in reproductive development and menstruation. Before ovulation estrogen production is the highest i.e., in the first half. Testes release the testosterone that is needed for the development and maintenance of physiological functions. And also for sperm which are needed for male fertility.
Pancreas refers to islets of Langerhans. These islets are found scattered throughout the exocrine pancreas. Cells release glucagon, B or beta cells release insulin, D or delta cells produce somatostatin, and F cells secrete pancreatic polypeptide. Insulin helps in the regulation of blood glucose levels. The spleen contains two types of tissues: Red pulp and white pulp. White pulp help in producing immune cells and growing blood cells. The red pulp helps in filtering the blood of antigens, microbes, and worn out or defective red blood cells. So the spleen does not release any hormone.
Hence the correct answer is option A.
Note: Insulin was discovered by Banting and Best in 1922. Insulin is anabolic. Thus it favors the storage of carbohydrates, fatty acids, and amino acids. Insulin causes rapid uptake, storage, and use of glucose by almost all tissues of the body. This effect is more marked in muscles, adipose tissue, and liver.