ANATOMY PHYSIOLOGY OF THE HUMAN INTEGUMENTARY SYSTEM
DEFINITION OF THE INTEGUMENTARY SYSTEM
The integumentary system is the most extensive organ system. It consists of the
skin and its accessories, including nails, hair, glands (sweat and sebaceous), and
specialized nerve receptors (for stimulus of changes in the internal or external
environment).
In accordance with their functions, the organs of the integumentary system serve
to seal human internal organs or tissues from external contact.
SKIN
The skin is the body's most extensive organ system, accounting for 15 percent of
the body's weight and covering 1.50-1.75m². The average skin thickness is 1-2 mm. The
thickest is 6 mm on the palms and feet, the thinnest is 0.5 mm on the penis. The skin
forms a barrier that separates the internal organs from the external environment and
participates in many vital body functions.
Functions of Skin
1. Protection
2. Sensibility
3. Water balance
4. Temperature regulation
5. Vitamin D production
6. Immune response function
, The skin consists of 3 layers, namely:
1. Epidermis
2. Dermis
3. Hypodermis or subcutaneous tissue
In addition, the skin also has other accessory structures, including:
- Sweat glands → Apocrine and Merocrine
- Sebaceous glands
- Hair
- Nails
EPIDERMIS
The outermost layer of skin is very thin and works to protect body structures from
microbial attack, and other foreign bodies.
The epidermis is derived from the ectoderm, consisting of several multilayers). The
epidermis is the top layer of human skin and varies in thickness: 400-600μm for thick skin
(skin on palms and feet) and 75-150μm for thin skin (skin other than palms and feet). (skin
other than palms and feet, having hair).
The epidermis or epidermis is divided into 2 main layers, namely:
a. Stratum corneum / horn layer
b. Stratum malfigi, divided into 4 layers, namely:
1. Stratum lucidum
2. Stratum granulosum
DEFINITION OF THE INTEGUMENTARY SYSTEM
The integumentary system is the most extensive organ system. It consists of the
skin and its accessories, including nails, hair, glands (sweat and sebaceous), and
specialized nerve receptors (for stimulus of changes in the internal or external
environment).
In accordance with their functions, the organs of the integumentary system serve
to seal human internal organs or tissues from external contact.
SKIN
The skin is the body's most extensive organ system, accounting for 15 percent of
the body's weight and covering 1.50-1.75m². The average skin thickness is 1-2 mm. The
thickest is 6 mm on the palms and feet, the thinnest is 0.5 mm on the penis. The skin
forms a barrier that separates the internal organs from the external environment and
participates in many vital body functions.
Functions of Skin
1. Protection
2. Sensibility
3. Water balance
4. Temperature regulation
5. Vitamin D production
6. Immune response function
, The skin consists of 3 layers, namely:
1. Epidermis
2. Dermis
3. Hypodermis or subcutaneous tissue
In addition, the skin also has other accessory structures, including:
- Sweat glands → Apocrine and Merocrine
- Sebaceous glands
- Hair
- Nails
EPIDERMIS
The outermost layer of skin is very thin and works to protect body structures from
microbial attack, and other foreign bodies.
The epidermis is derived from the ectoderm, consisting of several multilayers). The
epidermis is the top layer of human skin and varies in thickness: 400-600μm for thick skin
(skin on palms and feet) and 75-150μm for thin skin (skin other than palms and feet). (skin
other than palms and feet, having hair).
The epidermis or epidermis is divided into 2 main layers, namely:
a. Stratum corneum / horn layer
b. Stratum malfigi, divided into 4 layers, namely:
1. Stratum lucidum
2. Stratum granulosum
