Terrific Tuesday!!

Todays Agenda:

• Go over Kidney lab
• DISECT KIDNEY!!!

In the beginning we started by going over the kidney lab and what we were supposed to do. We also went over safety instructions:

• no rough housing
• wear gloves
• wear safety goggles

As soon as we were done with that we went to our lab bench and got our kidneys.

Our first instructions were to observe the kidney and start answering questions about it located on pages 23-28 in your unit packet. And then, the best

part, we cut the kidneys in half to get a better view. We observed our kidneys and located where all of the important structers where such as the:

• Renal cortex
• Renal pelvis
• Renal pyramid
• Renal medulla
• Ureter

After we were all able to locate where those were on the kidney by ourselves Mrs. Stein came over and quizzed us just to make sure.

After we were done, we all made sure that we cleaned up our lab bench!

HOMEWORK:

• Finish UP 23-28
• Test on Friday
• Visit Mrs. Stein for a homework pass

THE NEXT SCRIBE IS..................... ASHLEY

Marvelous Monday!

4/11/11

Agenda:

-Take out nutrient lab and UP 19-20 with stamp sheet

-Post lab nutrient lab

-Begin excretion!!!!!

-Video

Hello everyone! Welcome back to school after a fantabulastic weekend! Hope you had fun.

First today, Mrs. Stein stamped our stamp sheets for the nutrient lab, and UP 19-20. You were supposed to get 2 cow stamps. If you didn't, then well then.....

Next, we discussed the nutrient lab. It wasn't the easiest lab, but as we went over the results, I found it easier to comprehend.

After that, we started.........

EXCRETION!!!!! 

Excretion- get rid of/ removal

The organs involved in the excretion are:

~skin, lungs, liver, kidneys

The kidneys help release urine, the lungs release carbon dioxide, and the skin releases sweat.

The parts of the kidney are:

-Nephron

~Bowman's Capsule

+Loop of Henle

Bladder, ureter, and urethra are also parts of the excretory system.

URINE/SWEAT:

-Water

-Salt

-Uric acid/urea

~Nitrogenous waste

How does the excretory system play a role in homeostasis?

-Removes LIQUID wastes

-Regulates pH level in the blood. (Removes certain ions from blood.)

-REGULATES WATER CONTENT OF BLOOD!!!!!!!!!!!!!!!!!!!!!!!

After that.....

We watched a video about a man and his daughter, and the man ran out of water. That wasn't the point of the video, but it was funny. The video started to explain the excretory system, and how big of an impact water loss has on the human body.

If you didn't get the homework....... here it is!!!!!

-Read over kidney dissection- UP 23-28

-Test..... FRIDAY!!!!

-Visit Mrs. Stein for a homework pass!

Get ready to dissect some sheep kidney :)

Ashley is the next scribe

Thurs & Fridays blog :D

Thursday

Homework:

Nutrient lab due Friday

Quiz Friday

Friday:

HW:

read text 30.4 w/up 19-20 due mon

hw pass by Tue

Sorry for not doing Thursday's blog but i am making it up by doing today and yesterdays!

today we finished the nutrient lab but if people didnt finish because of the lack of time its due on monday. we also took the digestive quiz in the beginning of class and thats it....

LATE ARRIVAL WOOOOOOOO!

4/5/11

Agenda
-Hand in flow map
-Notes -> organs and digestion
-Introduce enzymes + Nutrient lab

Homework
-Nutrient Lab - Prelab - tomorrow
-Read 30.2 tomorrow
-Enzyme Reading / Chart - Thursday

We started off class by handing in our flow chart and picked up 5 papers which were the Enzyme Reading and chart and 3 diagrams. After we did our notes and we were given a chance at the end of class. Mrs. Stein also attempted to show us what the enzyme rennin does to milk, but was unable.

DIGESTION

-Breaks down large molecules into smaller molecules which can be used by cells
-Physical / Chemical digestion
-Alimentary canal is a one way tube which food passes through the body
-Accessory structures do not carry food, but aid in digestion

MOUTH

-Mechanical digestion (Teeth crushes food)
-Saliva moistens food and contains salivary amylase
-Starch into simpler sugars

ESOPHAGUS

-Muscular - connects pharynx and stomach
-Peristalsis
-Waves of muscle contraction
-Bolus enters the stomach through a sphincter

STOMACH

-Muscular sac lined with mucus
-Protection + lubrication -> Protects from burning the stomach
-Mechanical digestion
-Chemical digestion
-HCI kills bacteria, lower pH to activate pepsin
-Proteins break down
-Peptic ulcer - hole in stomach wall caused by bacteria

SMALL INTESTINE

-Duodenum - 1st part of the small intestine
-Enzymes and fluids here
-Carbohydrates, lipids, and proteins digested here
-Nutrients absorbed
-Lined with finger-like protections called villi
-Increases SURFACE AREA of absorption
-Water, cellulose, and indigestible remain

ACCESSORY STRUCTURES

-Liver produces bile which emulsifies (breaking a part for larger SURFACE AREA) fat
-Gallbladder stores bile
-Pancreas produces enzymes

LARGE INTESTINE

-Absorbs water from undigested material
-Bacteria synthesizes from vitamin K

The next scribe is..........
DRUMMMMMMMMMROLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
Michael R

Welcome Back to Earth!

Agenda:

1: Welcome Back: General Class Business:

2: New Unit Review

3: Digestive System Freewrite Activity

4: Begin HW

Homework:

1: Flowmap for Section 30.3

2: EC: Science Contest

Bare-Bones Notes Dept.:

Path of food:

Hand-Mouth-Esophagus-Stomach-S/L Intestine-Anus

-Most animals have multi-organ tract

-Some animals share mouth and anus

-Liver secretes chemicals to aid digestion

-Stomach acid (HCl) has a pH close to that of battery acid.

-Digestion can take up to 18 hours

-Saliva is part of chemical digestion

Extra Credit Dept.:

Everything About Water Science Contest will be held on April 14, 2011. Teams of four students will compete in six events with a water theme. Teams will compete in five events during one period of the school day and one after school event. For more information, the events and contest rules, visit the science department homepage.

Link Dept.:

Science Department Homepage

Contest Rules

Misc. Business Dept.:

Next Scribe: Dean (Daniel) A