Week 19 Flashcards
(24 cards)
What is the largest organ of the body?
Skin
The skin has a surface area of approximately 2 square meters and weighs around 4.5 kg.
What are the two main tissues of the skin?
Epithelial tissue and Connective tissue
These tissues form the structure and function of the skin.
What type of connective tissue binds organs and is found beneath skin and epithelial tissues?
Loose connective tissue (Areolar tissue)
Areolar tissue is found between muscles as well.
What is the function of adipose tissue?
Protects, insulates, stores fat
It is located beneath the skin, around kidneys, behind eyeballs, and on the heart surface.
Where is reticular connective tissue located?
In walls of liver and spleen
This tissue provides support in these organs.
What is the role of dense connective tissue?
Binds body parts
It is found in tendons, ligaments, and the deep layer of skin.
What is the primary function of hyaline cartilage?
Supports, protects, provides framework
It is found at the ends of bones, in the nose, and in respiratory passages.
What type of cartilage is known for being flexible and is found in the external ear?
Elastic cartilage
This type of cartilage supports and protects while providing flexibility.
What is the function of fibrocartilage?
Supports, protects, absorbs shock
It is found between bony parts of the spinal column and in the pelvic girdle.
What is the function of blood in the body?
Transport and helps maintain homeostasis
Blood circulates throughout the body within a closed system of blood vessels and heart chambers.
What are the key functions of the skin?
- Protection and touch
- Temperature regulation
- Synthesis of vitamin D
- Wound healing
- Excretion and absorption
Each function plays a critical role in maintaining overall health.
What are the two distinct layers of the skin?
Epidermis and Dermis
The epidermis is composed of stratified squamous epithelium, while the dermis contains connective tissue, smooth muscle tissue, nervous tissue, and blood.
What is the outer layer of the skin called?
Epidermis
It is composed of stratified squamous epithelium.
What is the inner layer of the skin called?
Dermis
This layer is thicker than the epidermis and consists of various tissues.
What is the purpose of the basement membrane in the skin?
Separates the epidermis and dermis
It provides structural support and regulates the exchange of materials.
Fill in the blank: Each hair develops from a group of stem cells at the base of a _______.
hair follicle
The hair follicle contains the hair root and can extend into the subcutaneous layer.
What type of glands secrete substances into ducts and onto surfaces?
Exocrine glands
Examples include sweat glands and sebaceous glands.
What type of glands secrete substances into the interstitial fluid and bloodstream?
Endocrine glands
These glands secrete hormones and other signaling molecules.
What are the two types of connective tissue based on their characteristics?
- Loose connective tissue
- Dense connective tissue
These types differ in their structure and function.
True or False: Epithelial tissue has a good blood supply.
False
Epithelial tissue lacks blood vessels and relies on diffusion for nutrient supply.
What is the primary function of muscle tissue?
Movement
Muscle tissue is responsible for generating force and movement in the body.
What is the function of nervous tissue?
Conduct impulses for coordination
It regulates integration and sensory reception in the body.
What is the characteristic of epithelial tissue regarding cell arrangement?
Closely packed cells, single or multiple layers
This arrangement allows for effective protection and secretion.
What is the primary role of connective tissue?
Bind, support, protect
It also fills spaces, stores fat, and produces blood cells.
