Shared Flashcard Set

Details

Module 3: Skin and Bones
N/A
68
Anatomy
12th Grade
10/11/2010

Additional Anatomy Flashcards

 


 

Cards

Term
Where is skin thinnest?
Definition
Over the eyelids
Term
Where is skin thickest?
Definition
Back/shoulders
Term
Appendages to skin:
Definition
Hair, nails, glands
Term
Epidermis
Definition
outer portion of skin 
Term
Dermis
Definition
deepest layer of skin 
Term
Epidermis is made of:
Definition
stratified squamous epithelial tissue
Term
Dermis is composed of:
Definition
dense irregular connective tissue
Term
Hypodermis:
Definition
loose connective tissue underneath dermis--connects dermis to muscle or bone
Term
Papillary layer
Definition
upper part of dermis
Term
Bumps in papillary layer
Definition
dermal papillae
Term
What do papillae do?
Definition
Increase blood flow to epidermis
Term
What are fingerprints formed by?
Definition
epidermal ridges
Term
What is the purpose of fingerprints?
Definition
Increase friction with things we touch
Term
Reticular layer
Definition
Network of protein fibers which run beneath the papillae and give skin its strength in all directions
Term
What forms lines of cleavage?
Definition
The direction the collagen fibers lie. 
Term
Hair follicle receptors
Definition
Nerves that wrap around hair
Term
How are skin cells replaced after a burn?
Definition
Hair follicles are made of epithelial tissue as well, so they rebuild the skin through mitosis
Term
Arrector pili
Definition
causes hair to stand on end
Term
What makes up the hypodermis?
Definition
Adipose tissue (insulates) and loose connective (connects skin to muscle or bone)
Term
Deepest layer of epidermis:
Definition
stratum basale
Term
What cells produce melanin?
Definition
Melanocytes
Term
Where are melanocytes found?
Definition
Stratum basale and stratum spinosum
Term
What is melanoma?
Definition
Uncontrolled mitosis of melanocytes
Term
In what layer do the cells begin keratinizing?
Definition
Stratum granulosum
Term
What is the thick skin found on the feet?
Definition
Stratum lucidum
Term
What is the outermost layer of epidermis?
Definition
Stratum corneum
Term
What is desquamation?
Definition
Process of dead cells flaking off
Term
What are the layers of the epidermis from bottom to top?
Definition
Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum
Term
Where is hard keratin found?
Definition
Hair
Term
Where is soft keratin found?
Definition
Skin, 
Term
Medulla
Definition
Central layer of hair
Term
Cortex
Definition
Makes up most of hair
Term
Cuticle
Definition
Outer layer of hair, contains hard keratin
Term
Hair follicle
Definition
Pocket from which hair grows
Term
Two layers that make up hair follicle:
Definition
internal and external epithelial root sheath
Term
What covers the hair follicle?
Definition
Dermal root sheath
Term
Hair matrix
Definition
Mass of undifferentiated cells
Term
When do hair cells differentiate?
Definition
During the growth stage
Term
Why is some hair shorter/longer?
Definition
Different lengths of growth/rest stages
Term
Merocrine sweat glands
Definition
Produce sweat and put it on surface of skin
Term
Apocrine sweat glands
Definition
Glands in armpits and pubic region
Term
Sebaceous glands
Definition
produce sebum
Term
Functions of the skeleton
Definition
Support, protection, movement, storage, hemopoiesis
Term
What minerals does the skeleton store?
Definition
Calcium, magnesium, phosphorus
Term
Yellow bone marrow
Definition
Stores adipose tissue
Term
Red bone marrow
Definition
produces blood cells
Term
Long bone
Definition
Longer than wide: femur
Term
Short bones
Definition
About as wide as it is long: carpals
Term
Flat bones
Definition
Thin and usually curved: Ribs
Term
Sesamoid bones
Definition
Small, round: patella, bones that develop inside tendons
Term
Irregular bones
Definition
No category: Vertebra
Term
Diaphysis
Definition
Shaft of bone
Term
Compact bone
Definition
dense bone matrix enclosing only a few small spaces; makes up epiphysis
Term
Epiphysis
Definition
Found at end of bone; made of spongy bone
Term
Spongy bone
Definition
Made of many small spaces or cavities surrounding the bone matrix
Term
Epiphyseal plate
Definition
Between diaphysis and epiphysis; made of hyaline cartilage when a person is young, hardens into bone when done growing
Term
Articular cartilage
Definition
hylaline cartilage that covers the end of a bone in a joint
Term
medullary cavity
Definition
runs down center of diaphysis; contains red bone marrow in a young person
Term
Periosteum
Definition
Outer sheath of bone
Term
Axial skeleton
Definition
supports and protects head, neck and trunk (skull, ribcage, vertebral column)
Term
Appendicular skeleton
Definition
attaches to axial skeleton and contains limbs (pectoral girdle, pelvic girdle, upper and lower limbs)
Term
Meatus
Definition
Passageway
Term
Foramen
Definition
A Hole
Term
Process
Definition
Projection on a bone
Term
Sinus
Definition
Hollowed out space in a bone
Supporting users have an ad free experience!