AP1 M7 problem set Flashcards
The integumentary system is comprised of what three parts of the body?
- Hair, skin, and nails
List the three layers of the skin from superficial to deep.
- Epidermis, Dermis, Hypodermis
Describe three functions of the integumentary system.
Production of vitamin D; contain sense organs for protection of skin and underlying tissue; protection from pathogens
Merkel’s cells and Meisner’s corpuscles are thermoreceptors
False
True or false: Thermoreceptors detect fine touch.
False
True or false: Pacinian corpuscles detect pressure.
True
Review shape and location of sensory organs in the layers of the skin (Figure 7.3)
Describe what an exocrine gland contains and how its contents reach the surface of the skin.
Exocrine glands contain secretions which are released through a duct (opening) into an epithelial surface or lining.
What is a sebaceous gland?
Sebaceous glands (oil glands) produce sebum (oil)
True or false: The epidermis is made up of stratified cuboidal epithelium.
False (stratified squamous epithelium)
Thermoregulation helps the body to regulate its temperature. Perspiration is one method in assisting thermoregulation.
Thermoregulation helps the body to regulate its temperature. Perspiration is one method in assisting thermoregulation.
What are the four layers of the epidermis?
Stratum corneum, stratum granulosum, stratum spinosum and stratum basale
True or false: Cells of the stratum basale have a high rate of cell division
True
The cells of the stratum basale have epidermal ridges which are the basis for each person’s distinct pattern called ______?
Fingerprints
True or false: Dead cells in the stratum corneum remain for about 2 weeks before they slough off.
True
These types of cells produce keratin.
Keratinocytes
These types cells produce melanin.
Melanocytes
What are the two layers of the dermis? Which layer contains the main blood supply for the skin?
Papillary and reticular; the reticular region contains the main blood supply
What is the medical term for a bruise?
Contusion
What is one of the purposes of the hypodermis?
Fat helps to insulate and regulate body temperature; The thickness of the hypodermis protects the deeper tissues and organs from injury.
What is a dermatome?
A dermatome is a region of skin innervated by one sensory nerve.
Where is the information gathered from a dermatome sent?
The sensory information gathered in each region of the skin is sent to the spinal cord and then finally the brain for processing.
True or false: The root of a hair follicle begins at the shaft.
False
Each hair follicle is connected to a muscle called__________.
Arrector pili
True or false: Hair can be impacted by hormones circulating in the body.
True
True or false: Nails are comprised of live skin cells.
False
Is the nail body the visible or the invisible portion of the nail?
The nail body is the visible or the portion of the nail.
What types of cells form a blood clot?
Platelets
Mast cells release what type of chemical?
Histamine
What is the purpose of the chemical released by mast cells?
Helps to dilate blood vessels to bring increased blood and nutrients to the injured area.
True or False: Fibroblasts are involved in engulfing foreign bacteria and particles.
False
Fibroblasts secrete what substance to assist in wound healing?
Collagen
What is the final phase of wound healing called?
Remodeling
What type of burn damages only the epidermis?
First-degree burn
Your patient was involved in a severe cooking accident. She is not able to feel any sensation in the burned area. What type of burn did your patient incur?
Fourth-degree burn (damage to deep tissues, dermis is completely destroyed along with sensory receptors in the skin).
