MEMBRANES & INTEGUMENTARY SYS. Flashcards
A blue/black pigment represents?
New bruise
What are Pacinian Corpuscles?
Sense pressure and vibrations
What is the function of Langerhans Cells?
Recognizes/removes foreign antigens
What is the function of Ceruminous Glands?
Produces cerumen (earwax), preventing foreign bodies from entering ear
Describe Stratum Spinosum.
Provides strength and flexibility to skin
What are Arrector Pili Muscles?
Pulls hair upright
What is the function of Synovial Membranes?
Lines freely moveable joints
What is the function of synovial fluid and what does it contain?
Lubricates joint cartilage and contains macrophages
What part of the body does Mucous Membrane/Mucosa line?
Lines a a body cavity that opens directly to the exterior
Describe the Parietal Layer of Serous Membrane.
Lines the cavity walls
A red/pink pigment represents?
Hemoglobin
What are Meissner Corpuscles?
Touch receptors
What is the ‘shaft’ of the hair?
Hair portion projecting through skin surface
A yellow pigment represents?
Jaundice (from medical condition)
What is the function of Sebaceous (Oil) Glands for the hair?
Lubrication
A yellow-orange pigment represents?
Carotene
Describe Stratum Basale/Germinativum.
Basement membrane containing keratinocytes
Describe the Visceral Layer of Serous Membrane.
Covers and adheres to the organs in the cavity
What part of the body does Serous Membrane line?
Lines/covers organs within the cavity
List the order of the Epidermal Layers from deep to superficial.
- S. Basale/Germinativum
- S. Spinosum
- S. Granulosum
- S. Lucidum
- S. Corneum
Where is the ‘root’ of the hair?
Deep to shaft, penetrating into dermis
Hardened plates of tightly packed, hard, dead, keratinized epidermal cells are known as?
Nails
A blue pigment represents?
Cyanosis (from poor circulation)
A yellow/green pigment represents?
Old bruise
Explain Epithelial Membranes.
Epithelial tissue with underlying CT layers
A redness/erythema pigment represents?
Inflammation
Describe Stratum Corneum.
Shedding keratinocytes
- Collagen fibres decrease
- Elastin losing elasticity
- Fibroblasts decrease
- Thinning of skin
These are the effects of?
Aging
- DNA damage
- Collagen and elastic fibre damage
These are the effects of?
Sun damage
Where is the ‘follicle’ of the hair?
Surrounding the root of hair
Describe Stratum Granulosum.
Dying cells
A pale yellow to tan to black skin color represents?
Melanin
What is the function of the Subcutaneous Tissue?
Serves as a shock absorber/insulator
What is Subcutaneous Tissue also known as?
Hypodermis Tissue
What is Synovial Membrane made up of?
Synoviocytes with a CT base
Function of Keratinocytes?
Produce keratin
What does the Sebaceous (Oil) Glands secrete?
Sebum
What is the function of the Sudoriferous Glands?
Produces sweat acting in thermoregulation and waste removal
What does Sebum function as?
Nourish and protects skin, hair
What are Free Nerve Endings?
Sense pain and temperature
What separates the epidermis and underlying adipose layer?
Dermis
Function of Melanocytes?
Produce melanin
What are Merkel Cells involved in?
Sensation of touch
Describe Stratum Lucidum.
Dead keratinocytes
