BIO235- Tissues

What are the three basic shapes of epithelial cells?

Squamous, cuboidal, and columnar.

Epithelial Tissue

A type of tissue characterized by variously shaped cells and functions like protection and absorption.

Squamous Cells

Flat, scale-like epithelial cells that can form simple or stratified layers.

Cuboidal Cells

Cube-shaped epithelial cells that can also form simple or stratified layers.

Columnar Cells

Tall, column-like epithelial cells that may have cilia and can form simple or stratified layers.

Transitional Layers

Stratified layers found only in the urinary system, where the shape changes from cuboidal to squamous.

Endothelial Tissue

A type of tissue found in internal blood and lymphatic vessels, heart, and kidneys.

Connective Tissue

A tissue that connects different parts of the body, characterized by a rich collagen composition.

Areolar Connective Tissue

The most common type of connective tissue, known for its loose and flexible structure.

Adipose Tissue

Connective tissue that stores fat, found in white (energy storage) and brown (heat generation) types.

Hyaline Cartilage

A type of cartilage found in joints, ribs, nose, and vocal tissues, known for its lack of nerves and blood flow.

Chondrocytes

Cells found in cartilage responsible for its formation and maintenance.

Osteoarthritis

A condition resulting from the breakdown of cartilage, often occurring in joints.

Dense Elastic Connective Tissue

A type of connective tissue that contains more elastic fibers than collagen, providing springiness. Located in erectile tissues, ligaments, and spine

Hyaline Cartilage

Supports every joint, ribs, nose, and vocal tissues, has no nerves or blood supply, does not regenerate

Fibrocartilage

Located in soft bone like knees, pubic symphysis, and intervertebral discs. Has type 1 collagen fibers, is flexible, usually opposite to hyaline cartilage

Compact Bone (“Cortical Bone”)

tree rings with a core canal, hard exterior of bones that provide support, calcium rich, and ~80% of adult skeleton

Cancellous Bone (“Spongy Bone”)

Internal bone tissue found in joint, vertebrae, and bone ends, less dense than compact bone, more surface area for force absorption, red bone marrow

Blood

connects all systems together, ~7% of total body weight, transports nutrients, oxygen, waste, immune cells, hormonal messages, regulate temperature and repairs tissues

Lymph

fluid within lymph nodes, constantly changing due to waste movement, can spread cancer

Muscle Tissue

Allows for mobility, can attach bone to muscle and muscle to muscle, lines digestive organs

Name the 3 types of muscle tissue

Skeletal, Smooth, and Cardiac

Voluntary or Involuntary?: Smooth muscle

involuntary

Voluntary or Involuntary?: Skeletal muscle

voluntary

Voluntary or Involuntary?: Cardiac muscle

Involuntary

Nervous Tissue

neurons that send and recieve electrochemical signals and neuroglia that surround and support neurons