Layers of Life 🌿
Skin Soldiers 🛡️
🧩 The Major Tissues in the Body
Breaking Bonds 🔬
🦠 The Basic Immune System
100

The skin is the largest what

Organ

100

These pigment-producing cells protect against UV radiation.

Melanocytes

100

What are the four major types of tissue in the body?

Epithelial, Connective, Muscle, and Nervous tissue

100

The stratum corneum is made up of these “dead” cells.

Corneocytes

100

White blood cells are also called what?

Leukocytes

200

The subcutaneous tissue is also called this.

Hypodermis

200

The cells in the dermis that produce collagen and elastin.

Fibroblasts

200

Tissue that covers and lines the body.

Epithelial tissue

200

Desmosomes act like this between skin cells

Glue or Bridges

200

Antibodies are produced by what cells?

B lymphocytes

300

The skin eliminates waste through these two glands.

Sweat and sebaceous glands

300

Mast cells release this chemical in allergic reactions

Histamine

300

Tissue responsible for movement

Muscle tissue

300

Enzymes or chemicals that dissolve desmosomes cause what?

Exfoliation

300

These “killer” immune cells attack viruses and tumors.

T lymphocytes

400

The skin’s primary function

Protection

400

Langerhans cells protect against what?

Pathogens

400

Tissue responsible for transmitting signals

Nervous tissue

400

The ability of products to move into the skin is called what?

Penetration

400

This type of immunity is present at birth and provides the first line of defense.

Innate immunity  

500

What is the middle supportive skin layer?

Dermis

500

What are the cells responsible for sensation?

Merkel cells

500

The dermis is primarily made of what type of tissue?

Connective tissue

500

The process of substances spreading deeper through the skin.

Permeation

500

These molecules trigger an immune response when recognized as foreign.

Antigens