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
