Organ Systems and Integumentary System

Organ Systems

• The human body is organised in levels of organisation
• Cell: Smallest unit of life (e.g., muscle cell)
• Tissue: Group of similar cells with same function (e.g., muscle tissue)
• Organ: Group of tissues working together for a specific role (e.g., heart)
• Organ system: Two or more organs working together (e.g., circulatory system)
• Organism: A living being (e.g., human)

Integumentary System

• Composed of skin, nails, hair, glands, and nerves
• Physical barrier protecting the body from bacteria, infection, injury, and sunlight
• Detects sensations like hot and cold
• Skin functions to protect internal organs and regulate body temperature
• Epidermis: Outer layer; produces pigments, protects, and provides water-proof barrier
• Dermis: Middle layer; contains nerves, sweat glands, hair follicles
• Subcutaneous tissue: Innermost layer; contains fat, connective tissues, and blood vessels

Skin

• Largest organ in the body
• Epidermis: Outer layer, produces pigment; protects against immune system and environment.
• Dermis: Contains nerve endings, sweat glands, and hair follicles
• Subcutaneous tissue: Innermost layer, composed of fat, connective tissues and blood vessels

Nails

• Protect ends of fingers and toes
• Consist of nail plate, nail bed, cuticle, and matrix(nail root)

Hair

• On head, eyebrows and eyelashes; protect eyes from dirt and warmth, insulate body heat
• Composed of hair shaft, hair follicle, and hair bulb

Glands

• Release substances (e.g., sweat, oil) onto the skin surface
• Sweat glands: Release sweat (eccrine and apocrine)
• Sebaceous glands: Produce sebum for hair and skin health
• Ceruminous glands: Produce earwax in ear canal

Ovaj kviz pokriva organizaciju ljudskog tela kroz nivoe organizacije, sa posebnim fokusom na integumentski sistem. Istražite funkcije kože, zaštitne uloge i slojeve koji čine ovaj vitalni organski sistem. Proverite svoje znanje o osnovnim funkcijama i strukturama prethodno navedenih sistema.