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Eyelids are primarily composed of skin, muscles, connective tissue, and glands. The skin on the outside of the eyelids contains hair follicles and sweat glands, while the inside of the eyelids have a mucous membrane lining. Smooth muscles called orbicularis oculi help control the movement of the eyelids.
The visual accessory organs include the eyelids, eyelashes, lacrimal glands, and the conjunctiva. The eyelids protect the eyes from debris and light, while eyelashes help to keep foreign particles away from the eye surface. The lacrimal glands produce tears, which lubricate the eyes and provide protection against infection. The conjunctiva is a thin membrane that covers the front of the eye and lines the eyelids, helping to keep the eye moist and protected from pathogens.
The tarsal glands, also known as Meibomian glands, are modified sebaceous glands located along the edges of the eyelids. They secrete an oily substance that helps prevent tear evaporation and keeps the surface of the eye lubricated. These glands can become blocked or infected, leading to conditions such as meibomian gland dysfunction.
In females, the major glands include the mammary glands (breasts), ovaries, and the reproductive system glands such as the Bartholin's glands, Skene's glands, and the cervix glands. These glands play important roles in reproductive functions, hormone production, and sexual health.
Meibomian glands
sebaceous glands
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Eyelids are primarily composed of skin, muscles, connective tissue, and glands. The skin on the outside of the eyelids contains hair follicles and sweat glands, while the inside of the eyelids have a mucous membrane lining. Smooth muscles called orbicularis oculi help control the movement of the eyelids.
The tarsal glands, also known as Meibomian glands, are modified sebaceous glands located along the edges of the eyelids. They secrete an oily substance that helps prevent tear evaporation and keeps the surface of the eye lubricated. These glands can become blocked or infected, leading to conditions such as meibomian gland dysfunction.
The tarsal glands located posterior to the eyelashes secrete an oily substance.
Tears come from the lachrymal glands, located under your upper eyelids.
Blepharitis is a common and chronic inflammation of the eyelids that causes red, swollen, and itchy eyelids. It can result from bacterial overgrowth, skin conditions, or blocked oil glands near the eyelashes. Treatment typically involves keeping the eyelids clean, warm compresses, and sometimes antibiotic ointments.
The structural modification in the salivary glands that allow them to carry out their functions are the different sized glands and their location. The larger of the two glands is the parotid gland. The smaller of the two salivary glands is the submandibular gland.
To control growth, reproduction, metabolism, and other endocrine glands
makes you healthy
In females, the major glands include the mammary glands (breasts), ovaries, and the reproductive system glands such as the Bartholin's glands, Skene's glands, and the cervix glands. These glands play important roles in reproductive functions, hormone production, and sexual health.