biology chapter28
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| zygote | ferized cell created by the union of the egg and sperm.
🗑
|
||||
| embryonic stem cells | -created during earliest diviion.
-potenetial to become any type of cell.
🗑
|
||||
| determination | obtain istruction (DNA) to become a specific cell.
-stem cell genes program the cell to be specific type.
-few weeks into development.
-irreersble.
🗑
|
||||
| differentiation | obtain parts to become specific cell.
-cells acquire the structure and function of a specialized cell.
-specific genes are activated.
🗑
|
||||
| 4 types of tissues:group of cell. | -muscle tissue ( contraction cell, skeleton)
-connection tissue (support the body; bone, fat, tendon)
-epitheliai tissue (protection sheet of cells; skin, stomach lining)
-nerve tissue (transmit slectirc signals; brain and spinal cord)
🗑
|
||||
| organ | groups of tissues (lung contains each tissue)
🗑
|
||||
| organ system | group of organs working together (digestive system)
🗑
|
||||
| organism | group of organ systems work together.
🗑
|
||||
| homeostasis | process where the body maitains a constant internal environment.
🗑
|
||||
| sensors (aka receptors) | gather info about the body.
🗑
|
||||
| communication center | message sent throughtout the body.
🗑
|
||||
| control center | recieves info from the sensors.
🗑
|
||||
| targert | body part changes its activity.
🗑
|
||||
| negative feedback | reverses the change back
🗑
|
||||
| positive feedback | speeds up the change.
🗑
|
||||
| thermoregulation | maintenance of the body temperature.
🗑
|
||||
| many organ system working together like... | -skin: sensors provide feedback to brain.
-nervous and endocrine system: send messages to/from the brain.
-muscle: start to shiver.
(part of thermoregulation.)
🗑
|
||||
| homeostasis desrupetion | some changes can be too great for your body to control (ex: frost bite)
🗑
|
||||
| long term diabetes: | -normally (good); *glucose in blood rises after meals *pancreas releases insulin *cells remove the glucose.
-type 1 (bad); *immune systems destorys pancreas cells *pancreas unable to make insulin *blood pH decreases as glucose builds up
🗑
|
||||
| type 2 diabetes | (bad); *pancreas does not make enough insulin *blood pH decreases as glucose build up.
🗑
|
||||
| nervous system | network of connected cells, tissue, and organs. controls thoughts, movement, life processes.
🗑
|
||||
| nueron (aka neeve cells) | transfer electriv impulses to/from the brain.
3 main parts; cell body, dendrites, axon.
🗑
|
||||
| cell body | contains nucleus and organelles
🗑
|
||||
| dendrites | branches that receive messages from neighboring cells.
🗑
|
||||
| axon | extension that carries messages away from the cell body.
🗑
|
||||
| resting potential | neurons at rest.
neuron exterior is positive in charge due to abundance od Na+ outside.
🗑
|
||||
| action potential | electrical impulse is triggered.
🗑
|
||||
| front end of impulses... | -channels open and allow Na+ to enter the cell
-negative impulses attracted towards positive Na+.
🗑
|
||||
| back end of impulse... | -channels open to allow K+ to exit the cell.
-interior returns to normal.
🗑
|
||||
| na+ | sodium (positive)
🗑
|
||||
| K+ | potassium (negative)
🗑
|
||||
| synapse | gap between neurons.
🗑
|
||||
| what is the problem of synapse? | impulse cannot cross the gap.
🗑
|
||||
| what is the solution of synapse? | nuetrotransmitter proteins sent from one cell to another.
🗑
|
||||
| what are the steps to synapse? | -impulses reaches neuron's terminal (end)
-vesicle releases neurotransmitters.
-neurotransmitters attach to receptors on neighbor
-new impulse created.
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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
Normal Size Small Size show me how
Created by:
syaghoubi
Popular Biology sets