Homeostasis
The feed back loop that amplifies change
What is positive feedback loops
The four macromolecules
Carbohydrates, proteins, lipids, nucleic acids
What is fibrosis
Replacement of damaged cells with scar tissue
- will not restore normal function
We classify histological sections by
What is layers and shape
The epidermis is made up of what tissue?
keratinized stratified squamous epithelium
The body's ability to detect change, activate mechanisms that oppose it, and thereby maintain relatively stable internal conditions
Homeostasis
Lactose is made of
glucose + galactose
The net movement of particles from area of high concentration to area of low concentration
Simple diffusion
Types of intercellular junctions
(What is the difference between the two)
What does the erector pilli muscle do
increases surface area to keep your body warm
Sweating when body temperature rises is an example of this type of feedback.
Negative feedback
This term describes a small building block that joins together to form larger molecules.
monomer
Channel proteins specialized for passage of water
Aquaporins
This gives tissues its strength and a lot of shock absorption
Collagen
Types of Human Hair
vellus – fine, pale hair
terminal – longer, coarser, and usually more
heavily pigmented
This part of a homeostatic system detects a change in the environment.
Receptor (sensor)
This decreases the barrier to starting a biological reaction
Enzyme
A red blood cell is added to a hypotonic solution (what will happen to the red blood cell)
absorb water and swell
This connective tissue is used for energy storage
Adipose tissue
What determines skin color?
Quantity of melanin produced
(everyone has the same number of melanocytes)
This occurs when something moves from low concentration to high concentration, requiring energy
Up the gradient
This is the extreme conformational change that destroys function
Denaturation
Membrane surface area increases, the diffusion rate ____
increases
This epithelium looks multilayered; some not reaching free surface; all touch basement membrane
What is Pseudostratified Epithelium
Most common type of skin cancer
Basal Cell Carcinoma