Chapter 6: Integumentary System Flashcards
What are the layers of tissue (skin)?
- Epidermis
- Dermis
- Basement Layer
- Subcutaneous Layer (hypodermis)
What are the types of injections?
- Intradermal
- Subcutaneous
- Intramuscular
What is an intradermal injection?
- Goes to the dermis
- Permanent
What is a subcutaneous injection?
Goes to the hypodermis
What type of cells are in the epidermis?
Stratified squamous epithelium
What are melanocytes?
Cells that produce melanin.
What is in the dermis that makes fingerprints?
Dermal Papillae
What are the sensory receptors in the dermis?
- Pacinian corpuscles
- Meissner’s corpuscle
What are Pacinian corpuscles?
They sense heavy pressure.
What is Meissner’s corpuscle?
They sense light pressure.
What are the phases of wound healing?
- Hemostasis
- Inflammation
- Proliferation
- Remodeling
What is hemostasis and how long does it last?
- It involves platelet clotting and releasing growth factors.
- It is an immediate phase
What is inflammation and how long does it last?
- Lasts from days 1–4
- It involves macrophages.
What is proliferation and how long does it last?
- Lasts from days 4–21
- It involves fibroblasts.
What is remodeling and how long does it last?
- Lasts from day 21–2 years
- It involves collagen.
What are the levels of a burn?
- First-degree
- Second-degree
- Third-degree
- Fourth-degree
Describe a 1st degree burn:
- Superficial, affects only the epidermis.
- Symptoms include redness, pain, dryness, and no blisters.
Describe a 2nd degree burn:
- Partial thickness, affects both the epidermis and the dermis
- Symptoms include redness, pain, swelling, blisters, and moistness.
Describe a 3rd degree burn:
- Full thickness burns, affecting all skin layers and sometimes deeper tissue.
- Symptoms include white, brown, or charred skin that may feel firm and leathery.
Describe a 4th degree burn:
- The most severe degree of burn, affecting all layers of the skin, muscles, tendons, and bone.
- Can lead to death
What is the purpose of the Rule of 9?
A method for quickly estimating the percentage of a person’s body that is burned, which is used to help determine the appropriate treatment and care.
What is the Rule of 9?
- Head: 9% of the body’s surface area
- Each arm: 9% of the body’s surface area
- Anterior chest and abdomen: 18% of the body’s surface area
- Posterior chest and back: 18% of the body’s surface area
- Each leg: 18% of the body’s surface area
- Perineum: 1% of the body’s surface area
