Cell
Which organelle packages and transports proteins and lipids? Hint: aka the UPS of the cell
Golgi body
Cell membranes are semipermeable because they have _____ heads and _____ tails
Polar/ hydrophilic
Nonpolar/ hydrophobic
A tissue is made of several _____ working to perform a common task
Cells
Which layer of the integumentary system (epidermis, dermis, hypodermis) is made of only epithelial cells?
Epidermis
Which skin cancer is the most dangerous (highly metastatic)?
Melanoma
Which of the three kinds of muscle is used in digestive organs?
Smooth muscle tissue
If two cells need to communicate chemically, they might be connected by ___ junctions
Gap junctions
Active transport requires ATP and moves a substance ____ its concentration gradient
Against
_____ tissue is highly cellular, avascular, and has apical and basal 'poles'
Epithelial tissue
Langerhans/ dendritic cells
What is the immediate danger from a 3rd degree burn?
What is the next danger from a 3rd degree burn?
Dehydration
Infection/ hypothermia
Which of the 4 tissues (connective, epithelial, muscular, nervous) is used for absorption and secretion? Hint: secretion is done by glands
Epithelial tissue
The rough ER packages proteins; the smooth ER packages lipids and doesn't package proteins because it does not contain _____
Ribosomes
This type of vesicular transport is used when cells ingest large materials, and is often done by immune cells like macrophages
Phagocytosis
Any connective tissue has ___, _____, and ____. (Blood only has two of these)
Cells, ground substance, and fibers
Name two functions of the integumentary system
Protects against abrasion
Protects against disease (immune)
Waterproofing/ protects against dehydration
Temperature regulation
Sensations (touch, temp, pressure, pain)
Absorbs vitamin D
A burn that reaches the dermis but not the hypodermis is called what?
2nd degree burn or partial thickness burn
Alveoli in the lungs need to diffuse gases (O2 and CO2) from one side of the cell to the other quickly. They are made of ____ ____ epithelium, which has 'thin walls'.
Simple squamous epithelium
Cytokinesis starts in _____ and ends in ____
Anaphase, Telophase
When a cell is placed in a hypertonic solution, what happens to it? Why?
Shrivels due to osmosis (osmotic pressure)
What kind of epithelial tissue is found in the ureters and urinary bladder? Why is it useful there?
Transitional epithelium
Distension
Why is loose areolar tissue under the epidermis important? (~2 words)
Diffusion of nutrients; diffusion; epidermis is avascular; avascular
The liver is responsible for detoxifying the blood from toxic substances. What organelle(s) would be important in liver cells?
Smooth ER, peroxisomes, lysosomes
Which type of cartilage is densely packed with collagen, and is used for shock absorption?
Fibrocartilage
In which phase of mitosis does the nuclear envelope re-appear?
Telophase
List three factors that affect diffusion rate
Temp, size of solute, steepness of concentration gradient, surface area, membrane permeability
In nervous tissue, neurons transmit electrical signals. On the other hand, _____ are not electrically excitable and are there to support neurons.
Neuroglia
Cells in the stratum spinosum of the epidermis produces the protein ____
When those cells are dead (at the stratum corneum), what is that protein used for?
Keratin
Structure/ strength/ waterproofing
Juanito has a genetic disorder where his fibroblasts do not function properly. Which of these tissues would be most affected?
Simple squamous epithelium
Blood
Dense irregular connective tissue
Hyaline cartilage
Dense irregular connective tissue
Dense regular connective tissue has collagen fibers running in the same direction, making it great for withstanding heavy loads. DRCT is found in ____ and _____.
Tendons and ligaments.