Exocrine glands have ducts. Endocrine glands do not have ducts.
The tear ducts
The seminal vesicle ducts empty into the ejaculatory ducts. These ducts are formed by the merger of the seminal vesicle ducts and the vas deferens. The ejaculatory ducts then pass through the prostate gland and open into the urethra, contributing to the semen during ejaculation.
An internal gland is a type of gland that secretes hormones or other substances directly into the bloodstream rather than through ducts. These glands play a crucial role in regulating various bodily functions and maintaining overall health. Examples of internal glands include the pituitary gland, thyroid gland, and adrenal glands.
The extension of a gland refers to the portion of the gland that is extended or projected beyond its main body. This extension can include ducts, lobules, or secretory units that are responsible for producing and releasing substances such as hormones or enzymes.
A sialolith, also known as a salivary gland stone, is a calcified mass that can form within a salivary gland or its ducts. It can block the flow of saliva, leading to symptoms such as swelling, pain, and difficulty eating. Treatment may involve massage, hydration, or in some cases, surgical removal.
"Glands without ducts" are called "ductless" or "endocrine" glands. These include the pancreas and pituitary gland. Endocrine glands produce hormones, which are then carried by the bloodstream for transport around the body. The opposite type of gland is called the exocrine glands. They include the sweat gland and the salivary gland: they have ducts, which pass hormones or other substances directly to where they are needed.
The tear ducts
C
the exocrine gland.
Ducts.
The salivary gland is a flask-shaped gland with unbranched ducts. These glands produce saliva that helps with digestion by moistening food and breaking down carbohydrates.
The hormone primarily responsible for the growth of mammary gland ducts during pregnancy is estrogen.
This gland would be classified as an exocrine gland. Exocrine glands secrete their products, such as enzymes or hormones, through ducts directly to the external environment or surface of the body.
The seminal vesicle ducts empty into the ejaculatory ducts. These ducts are formed by the merger of the seminal vesicle ducts and the vas deferens. The ejaculatory ducts then pass through the prostate gland and open into the urethra, contributing to the semen during ejaculation.
An internal gland is a type of gland that secretes hormones or other substances directly into the bloodstream rather than through ducts. These glands play a crucial role in regulating various bodily functions and maintaining overall health. Examples of internal glands include the pituitary gland, thyroid gland, and adrenal glands.
The mammary gland is an exocrine gland. It has ducts through which milk is secreted.
Eccrine sweat gland