goblet cells
The generic term for glands that empty into a duct or onto a body surface are called exocrine glands. Glands the release their secretions directly into the blood stream are called endocrine glands.
To the previous answer, it is not a plankton. Amoebas are single celled, but they are not plankton. These organisms are classified under Archaea, and are commonly called unicellular. They are not to be confused with microorganisms. All unicellular organisms are microorganisms, but not all microorganisms are unicellular.
amoeba
AmoebaA single-celled organism is also called a unicellular organism._________________More Detailed:_________________Not only the single celled organisms from the family Amoeba, but also bacterium are single celled or unicellular.
Haustra
Exocrine gland.
Pancreas and the Ovaries(in females) are the glands which can be called both endocrine and exocrine.
The sebaceous glands and sweat glands secretes their secretions on the surface. That is on the skin. Technically the glands of the intestine also secrete their secretions on the surface. The intestinal cavity is never 'inside' your body. It is out side your body.
single celled organisms or microorganisms
The generic term for glands that empty into a duct or onto a body surface are called exocrine glands. Glands the release their secretions directly into the blood stream are called endocrine glands.
A single celled organism is called unicellular.
unicellular
acinar gland
Sweat glands exhibit a glandular type called an exocrine gland. Other examples of exocrine glands are milk, saliva and digestive juices.
The organisms that consists of one single cell are called 'unicellular'. They are also called 'monads'. The types of unicellular organisms are bacteria, protozoa, archea an some types of algae.
Single celled organisms are also called unicellular. They included organisms from bacteria, archaea, protozoa, unicellular algae, and unicellular fungi.
A single celled organism is called unicellular.