Chapter 4 Pt. 4 Flashcards
(34 cards)
What are the four different types of membranes?
1) Mucous Membrane
2) Serous Membrane
3) Synovial Membrane
4) Cutaneous Membrane
What are the characteristics of mucous membrane?
- line passageways that open to the exterior of the body
- some are specialized for absorption
- some secrete mucus that traps bacteria and viruses that could cause illness
What are the characteristics of serous membrane?
- line the thoracic and abdominal cavities and the organs within them
- secrete a fluid that lubricates the organs within these cavities
What are the characteristics of synovial membrane?
- line the cavities of freely movable joints (such as the knee)
- secrete a fluid that lubricates the joint
What are the characteristics of cutaneous membrane?
- covers the outside of the body
- is thick, relatively water-proof, and comparatively dry
Which membrane is also known as skin?
Cutaneous Membrane
What is the Integumentary System?
the skin and its derivatives (hair, nails, sweat glands, and oil glands); an outer covering
What are the functions of the skin?
- protection
- prevents excessive water loss
- temperature regulation
- production of Vitamin D
- detection
___________-cells in the skin that have a more active way fighting infection
macrophages
How does the skin regulate temperature?
flow of blood
Vitamin D, stimulates the absorption of _______ and _________
calcium
phosphorus
True or False: Skin is less than 5mm (1/25 of an inch) thick
True
True or False: Skin is your largest organs
True
What are the layers of the skin from outmost to inner?
1) epidermis
2) dermis
3) hypodermis (subcutaneous layer)
Which layer of skin is this: thin, outer layer that forms a protective barrier against environmental hazards
epidermis
Which layer of skin is this: inner layer that contains blood vessels, nerves, sweat and oil glands, and hair follicles
dermis
Which layer of skin is this: anchors the skin to the tissues of other organ systems that lie beneath
hypodermis (subcutaneous layer)
The epidermis is composed of several layers of _________ _____
epithelial cells
The outer surface of the epidermis is made of ____ ____ cells
dead skin
The dead skin cells of the epidermis are continuously being _____ and _______ due to keratin
shed
replaced
The dead skin cells of the epidermis are continuously being shed and replaced due to _______
keratin
What is keratin?
a tough, fibers protein; gradually replaces the cytoplasmic contents of the cells
________ gives the epidermis its protective properties
Keratin
The dermis consists primarily of ___________ ______.
connective tissue