### body part | organ | gland:

Special gland
* located in the leaves are able to excrete excess salt.
* remove salt from water and food.

Specialize gland
* have functions
  - various functions
* play roles.
* secrete enzymes.

### body part | organ | gland:

Sweat gland
* Most sweat glands have excretory functions
* Some sweat glands excrete perspiration
  - have tubes
  - produce perspiration
  - remove water
* add moisture to skin, but the lips' only source of moisture is saliva inside the mouth.
* appear and body hair begins to grow.
* are active in the baby's scalp and scalp sweating can be used as a clinical indicator
  - also on their feet located on paws between toes
  - distributed in the skin over the whole body and are of the apocrine type
  - exocrine glands
  - less active during winter
  - most numerous on the palms and soles of the feet
  - part of skin
* are present but none on pads of feet
  - in the skin covering the posterior aspect of the auricle
  - small, tight coils of cells in contact with a network of capillaries
* become activated with the rise in temperature
  - active as body core temperature rises
  - non-functional
* decrease their activity, lowering the rate of water loss by perspiration.
* develop, and the external skin has turned from transparent to opaque.
* empty their material into hair follicles.
* ensure the heat is dissipated before it cooks the sperm.
* excrete water, salts, and waste to help cool down the body.
* help regulate our body temperature and release water and salt
  - to cool the animals
* increase their activity.
* is coiled tubule in dermis, straightens as exits through epidermis.
* produce copious amounts of sweat
  - moisture on the surface of the skin
  - more sweat
  - pheromones that are secreted through the skin and become airborne
* pump perspiration through pores.
* receive messages from the nervous system.
* regulates water, salt, and temperature.
* release liquid that gets evaporated from the skin, taking heat with it.

### body part | organ | gland | sweat gland:

Apocrine gland
* are androgenresponsive structure that become active at puberty
  - larger than eccrine glands
* develop during the stages of puberty and have nothing to do with body temperature.
* emit a milky secretion that is rich in organic materials.
* give off proteins which bacteria use as their source of nutrition.
* have a widely-dilated duct lined by two layers of cuboidal cells.
* play no part in thermoregulation.
* secrete a slightly different cocktail of chemicals than eccrine glands do.
* sweat gland

Eccrine gland
* are active in thermoregulation and are stimulated by the sympathetic nervous system
  - more common
  - simple coiled glands
  - the major sweat glands of the human body, found in virtually all skin
* have long ducts that run up to the surface and open out onto the skin.

Swollen gland
* are just a symptom of a disease and the way the body fights the foreign invader
  - usually no reason for concern when minor infections are present
* can develop about a week after the sore appears.
* exist throughout the body but are often most noticeable in the neck regions.

Tear gland
* Most tear glands are part of eyes.
* secrete greasy tears, which protect the eyes from the salt in the water.