Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

BI220 E1 L6

lecture 6 slides

QuestionAnswer
plant tissues dermal, vascular, ground - provide structure & facilitate transport of materials (i.e. sugar, water)
animal tissues epithelium - body linings & surfaces. connective - exhibit secreted extracellular matrix muscle - contractile tissue nervous - communication
cell walls jobs provide tensile strength, resist osmotic pressure changes
primary cell wall produced during cell growth
secondary cell wall thickened, more rigid structure, formed from diff molecules
plasmodesmata most common plant cell junction. permits transport & comms between adjacent cells
ECM made of proteoglycans (protein core surrounded by carb chains - glycosaminoglycans)
2 proteins that form proteoglycans with GAGs collagen - provides support elastin - provides elasticity
epithelial tissue uses mostly collagen & proteins (laminins) & glycoprotein (fibronectin)
ECM function structural support, mech strength of tissue, intercellular comms, storage & delivery (growth factors, nutrients, etc), surface for cell adhesion movement and functioning, tissue healing and regeneration
cell junction divisions 1. cell-cell junctions 2. cell-matrix junctions
anchoring junctions mechanically attach cells & cytoskeletons to neighboring cells (adherens junctions, desmosomes). extracellular matrix (hemidesmosomes, focal adhesions)
communicating junctions mediate passage of chem/elec signals from one interacting cell to another by forming channels for aqueous connectivity between cells (gap junctions)
occluding junctions seal cells together in epithelium, prevents molecules from leaking from 1 side of the sheet to the other (tight junctions)
tight junctions use claudins & occludins - form impermeable barrier to most substances. weakly link to actin filaments
desmosomes use cadherins (ca2+ dependent adhesion proteins). change shape & underlying filaments for support. link to intermediate filaments
adherens junctions use cadherins (ca2+ dependent adhesion proteins). change shape & underlying filaments for support. link to actin filaments
gap junctions made of connexins (vertebrates) & innexins (invertebrates). form transmembrane pores & permit ion flow by forming channels between cells
integrins cell-cell connections, ECM changes, signaling. found in hemidesmosome
Created by: knorrod
Popular Biology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards