Cell Cycle

During which phase of the cell cycle does DNA replication occur?

What is the primary function of skeletal muscle tissue?

Which type of epithelial tissue is found in the alveoli of the lungs?

What is the term for cells that permanently cease dividing?

What is the primary function of cardiac muscle tissue?

Which type of tissue forms boundaries between different environments?

What is the characteristic of epithelial tissue that allows it to heal quickly?

What is the term for the process of cell division?

Which type of epithelium is found in the trachea?

What is the characteristic of stratified epithelium?

What is the function of the cilia in the pseudo-stratified columnar epithelium?

What is the main characteristic of loose connective tissue?

Which type of connective tissue is found in the walls of many large arteries?

What is the main difference between thick and thin skin?

What is the function of connective tissue?

What type of epithelium is found on the skin?

The cell cycle has two major periods: Interphase and Cell Division
Interphase: cell grows, carries out usual activities, and prepares for cell division
Interphase consists of three subphases: G1 (vigorous growth and metabolism), S (DNA replication), and G2 (preparation for division)
Cell division (mitotic phase): cell divides into two, consisting of Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis

Tissues

Nervous Tissue

Internal communication
Found in brain, spinal cord, and nerves
Doesn't regenerate

Muscle Tissue

Contracts for movement
Types: Skeletal (voluntary movement, locomotion, facial expression), Cardiac (involuntary control, propels blood into circulation)

Epithelial Tissue

Forms boundaries between different environments
Found on skin surface, lining of digestive tract, sensory organs, and glands
Has polarity, regenerates quickly
Shapes: Squamous, Cuboidal, Columnar
Types:
- Simple Columnar (e.g., small intestine)
- Simple Squamous (e.g., alveoli in lungs)
- Stratified Squamous (e.g., skin, trachea)
- Pseudo-Stratified Columnar (e.g., trachea)
- Stratified Squamous Keratinized (e.g., skin with keratin)

Connective Tissue

Supports and protects other tissues
Types:
- Connective tissue proper:
  - Loose connective tissue (e.g., Aerolar, Adipose, Reticular)
  - Dense connective tissue (e.g., Dense Regular, Dense Irregular, Elastic)
- Supporting connective tissue:
  - Cartilage (e.g., Hyaline cartilage)

Understand the two major periods of the cell cycle, including interphase, where cell growth and preparation for cell division occur. Learn about the subphases of interphase, including G1 and S phases.