Chapter 4 Quiz and Flashcards: Skin and Body Membranes Anatomy

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Questions and Answers

What is the main function of body membranes?

Cover organs and form sheets around tissues

Protect body surfaces and line body cavities (correct)

Maintain homeostasis and balance fluids

Regulate body temperature and hydration

Which type of epithelium is found in the esophagus?

Pseudostratified ciliated columnar epithelium

Simple columnar epithelium

Stratified squamous epithelium (correct)

Transitional epithelium

What type of membrane lines the lung bronchi?

Cutaneous membrane

Serous membrane

Mucous membrane (correct)

Synovial membrane

What is the composition of the underlying layer of the cutaneous membrane?

Dense connective tissue Signup and view all the answers

What is the type of epithelium found in the mouth?

Stratified squamous epithelium Signup and view all the answers

What is the main characteristic of serous membranes?

Produces serous fluid to reduce friction Signup and view all the answers

What type of epithelial tissue is found on the surface of serous membranes?

Simple squamous epithelium Signup and view all the answers

Which serous membrane lines the abdominal cavity?

Peritoneum Signup and view all the answers

What is the function of synovial membrane?

To produce a lubricating fluid Signup and view all the answers

What is the term for the layer of serous membrane that covers the outer surface of an organ?

Visceral layer Signup and view all the answers

Which of the following is NOT a type of serous membrane?

Synovial membrane Signup and view all the answers

What type of tissue is found underlying the epithelial layer of serous membranes?

Areolar connective tissue Signup and view all the answers

What is the primary function of the epidermis?

To prevent water loss by forming a cornified or keratinized layer Signup and view all the answers

Which type of tissue is found in the dermis?

Dense connective tissue Signup and view all the answers

What is the function of the skin in terms of body temperature regulation?

To aid in both body heat loss and heat retention Signup and view all the answers

What is the function of the skin in terms of excretion?

To aid in the excretion of urea and uric acid Signup and view all the answers

What is the hypodermis composed of?

Adipose tissue Signup and view all the answers

What is the primary function of the skin in terms of protection?

To protect the skin from various types of damage Signup and view all the answers

Study Notes

Body Membranes

Body membranes cover body surfaces, line body cavities, and form protective sheets around organs.
Classified according to tissue types.

Classification of Body Membranes

Epithelial membranes
Cutaneous membranes
Mucous membranes
Serous membranes
Connective tissue membranes
Synovial membranes

Cutaneous Membrane

Also known as skin
Outermost protective boundary
Superficial epidermis composed of keratinized stratified squamous epithelium
Underlying dermis is mostly dense connective tissue
Covers the body surface

Mucous Membranes

Surface epithelium type depends on site
Lines all body cavities that open to the exterior body surface
Often adapted for absorption or secretion
Examples: mucosa of nasal cavity, mouth, esophagus, and lung bronchi

Serous Membranes

Surface is a layer of simple squamous epithelium
Underlying layer is a thin layer of areolar connective tissue
Lines open body cavities that are closed to the exterior of the body
Occur in pairs separated by serous fluid
Visceral layer covers the outside of the organ
Parietal layer lines a portion of the wall of ventral body cavity
Examples: peritoneum, pleura, and pericardium

Connective Tissue Membrane

Synovial membrane
Connective tissue only
Lines fibrous capsules surrounding joints
Secretes a lubricating fluid

Integumentary System

Skin (cutaneous membrane)
Skin derivatives: sweat glands, oil glands, hair, and nails

Skin Functions

Protects deeper tissues from mechanical damage, chemical damage, bacterial damage, ultraviolet radiation, thermal damage, and desiccation
Aids in body heat loss or heat retention as controlled by the nervous system
Aids in excretion of urea and uric acid
Synthesizes vitamin D

Skin Structure

Epidermis: outer layer, stratified squamous epithelium, cornified or keratinized, avascular, most cells are keratinocytes
Dermis: dense connective tissue
Hypodermis (superficial fascia): deep to dermis, anchors skin to underlying organs, composed mostly of adipose tissue