Acromegaly is a condition caused by the hypersecretion of growth hormone, typically due to a benign tumor on the pituitary gland.

This leads to abnormal growth of bones and tissues, often resulting in enlarged hands, feet, and facial features.

Viruses are indeed very small, typically ranging from 20–200 nm in size, but some can exceed 1000 nm in length.

In comparison, bacteria are much larger, generally measuring 2–3 μm (micrometers) in length, and eukaryotic cells are even larger, with diameters ranging from 10–30 μm.

This size difference highlights the distinct biological structures and classifications among viruses, bacteria, and eukaryotic cells.

The anterior lobes of the pituitary gland release hormones called tropins, which stimulate other endocrine glands to release their hormones. Examples include thyroid-stimulating hormone (TSH) and adrenocorticotropic hormone (ACTH).

Sebaceous Glands:

Sebaceous glands are microscopic glands situated in the dermis, the second layer of the skin. They are typically located near hair follicles, with their ducts opening into the follicles. These glands are present throughout the body, except for areas such as the palms of the hands and soles of the feet, where hair follicles are absent.

Function:
These glands secrete an oily substance called sebum, which plays a crucial role in lubricating and protecting the skin and hair, helping to prevent dryness and maintain a healthy skin barrier.

The hypothalamus is a small, pea-sized gland located below the brain, specifically beneath the thalamus and above the brainstem.

It plays a crucial role in regulating various bodily functions, including temperature, hunger, thirst, sleep, and the hormonal activities of the pituitary gland.

Severe Acute Respiratory Syndrome (SARS) is a viral respiratory illness caused by the SARS coronavirus (SARS-CoV).

It first emerged in 2002 and led to a global outbreak, characterized by symptoms such as high fever, cough, and difficulty breathing. SARS can be severe and may lead to pneumonia or respiratory failure.