Lab Exam #1 Ch. 1-5 Flashcards
Stages of mitosis
Prophase metaphase anaphase telophase
Mitosis
One nucleus becomes two nuclei
Prophase
Pre- beginning –
Chromatin condenses into chromosomes
Metaphase
Chromosomes line up in middle
Anaphase
Chromosomes start to pull apart
Telophase
Looks like 2 attached prophase cells
Cleavage furrow
Cytokinesis
Division of cell (cytoplasm)
4 passive processes
Diffusion, facilitated diffusion, simple diffusion, osmosis
2 active processes
Use ATP
Active transport, vesicular transport
Vesicular transport works by
Endocytosis and exocytosis
Three types of Endocytosis
Phagocytosis ( cell eating) , pinocytosis (cell drinking), receptor mediated endocytosis (plasma proteins bind certain substances)
Identifying pseudo stratified epithelium
Simple columnar epithelium (one layer of cells) and cells vary in height and then nuclei lie at different levels
Identifying transitional epithelium
Stratified squamous epithelium but cells may slide over one another
Two types of glands
Endocrine and exocrine
Endocrine
Ductless gland.
Secrete hormone into blood
Exocrine gland
- Have ducts.
- Secretions empty through ducts to the body surface or into body cavities.
-Include the sweat and oil glands, liver, and pancreas.
Cardiac muscle look like
Sideways tiger stripes
Dense connective tissue : dense regular
Very tight lines
Dense irregular
Looks like raw meat collagen fibers go in all directions
Dense CT elastic
Curly hair
The avascular epidermis is a keratinized stratified squamous epithelium consisting of 4 cell types :
Keratinocytes- gives epidermis durability
Melanocytes
Dendritic- play role in immunity
Tactile (merkil) - touch receptors
3 layers of dermis
Papillary layer
Dermal papillae
Then reticular layer
Papillary layer
Areolar CT.
Very uneven, has finger-like projections from superior surface
Reticular layer
Deepest skin layer
Made of Dense Irregular CT.
Has many veins, arteries, sweat and sebaceous glands, and pressure receptors.
Cutaneous glands
Sebaceous (oil) glands
Sweat (sudoriferous) glands
Sebaceous (oil) glands
Found all over skin
Produce sebum
Sweat (sudoriferous) glands
Type or exocrine gland
Eccrine gland aka merocrine sweat glands
All over body
Heat regulation
Apocrine- axillary and genital
Produce eccrine sweat plus protein and fat substances
