Microscopic Anatomy Flashcards
(37 cards)
Histology
Study of tissues
Ectoderm
Outer most layer- hair, nails, skin
Mesoderm
Middle layer- Circulatory system, lungs, musculoskeletal
Endoderm
Innermost layer – digestive system, glands
What does epithelial tissue have
Cells, basement membrane, avescular (has no blood vessels)
Epithelial tissue function
Filtration, absorption, secretion, protection
Epithelial tissue specialisations
Cell junctions, Cilia, glands
What is the epithelial lining split into
Complex and simple
What are complex epithelium linings
Stratified, pseudostratified, transitional
What are the simple epithelium linings
Squamous, cuboidal, columnar
How are epithelium names given
Name the top layer of cells
What do you cell junctions have
Gap junctions, tight junctions, anchoring junctions
What is in a protective layer
Cilia, microvilli, keratin
What type of glands are there in the epithelial cells
Exocrine gland- via ducts (eg. sweat saliva and breastmilk)
Endocrine gland- ductless and secretes directly into the blood eg. thyroid, pituitary
What do glands do
Secrete mucus
What is autophagy
It’s an immune reaction which protects babies from infection
Autophagy disorders
Lysosomal disorders, heart disorders, cancer and autoimmune diseases
What does connective-tissue have
Cells, fibres, ground substance
Connective tissue function
Bind cells and organs together, provide strength stability and repair
Loose Areola connective tissue
Binds tissues to one another, for protection and nourishment. They are beneath the skin around the vessels
What is Adipose
That cells in ground substance
What is Adipose function
Empty space in the body, fat stores, kidney cushioning
What is reticular
Delicate fibres in internal organs eg liver and spleen
Dense and regular connective tissue
They are strong and flexible Eg tendons and ligaments