3.4 Excretion

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 3

One device per group 

• Please take your seat
• Get your laptop , book,  notebook and pen.
•  Wait quietly 

To do - 5 min

start reading the next basic: 3.4 - Excretion 

Which one picks up Oxygen?

1. White blood cells
2. Red blood cells
3. Platelets

Which one is the shortest circulation?

1. Pulmonary
2. Systemic

Through which side of the heart flows oxygenated blood?

1. Right side
2. Left side

The heart pumps oxygen rich blood into the?

1. Superior vena cava
2. Pulmonary arteries
3. Aorta
4. Aorta and pulmonary arteries

Which part of the circulatory system prevents blood from flowing back?

1. Veins
2. Arteries
3. Valves
4. Atria

The heart receives oxygen rich blood from the ...

1. Pulmonary veins
2. Pulmonary arteries
3. Coronary arteries/veins
4. Aorta

Put the texts underneath the corresponding picture.

Cardiac pause - heart fills with blood

Atria contract

Cardiac pause - heart fills even more with blood

Ventricles contract

Blood flows into arteries

Today - Basic 3.4 - Excretion 

Goal:

You can name the parts of the kidneys and urinary tracts with their features and functions.

Practice: 

Ex. 1-8

what does
"excretion"
mean?

Execretory organs

Excretion = to get excess, unnecessary, and toxic substances from your blood and remove it from your body

Execretory organs = lungs, liver, kidneys, skin

Kidneys

• Two kidneys
  
• Receive blood from renal artery
• Blood plasma is filtered from waste products and excess substances
• Result is urine
• The kidneys filter ~  180/200 L of blood a day 

Components of a kidney

• Renal cortex
• Renal medulla
• Renal pelvis
• Renal artery 
• Renal vein 
• Ureter

Renal cortex & Renal medulla

• Remove from the blood:
• Waste products
• Excess water
• Excess salt
• All harmful substances
• 
  
• Combined we call this:  urine

Renal pelvis

• Collects the urine
• Collected urine is transported to the bladder through the ureters.

What are the components of a kidney?

1. Renal cortex, renal artery and renal pelvis.
2. Renal pelvis, renal medulla and renal vein.
3. Renal medulla, renal cortex and renal artery.
4. Renal cortex, renal medulla and renal pelvis.

Does the renal artery transport oxygen rich or oxygen poor blood?

1. Oxygen rich
2. Oxygen poor

What is the name of the component that transports urine to the bladder?

1. Urethra
2. Renal pelvis
3. Ureter

Kidney diseases

• Bladder infection​
  
• Blockage of urethers or urethra​
  
• Kidney stones​
• Congenital kidney defects

Dialysis​

Transplantation​

00:25

What is meant by
accumulation?

1. the breakdown of toxins and waste
2. the build up of toxins and waste
3. the build up of urine

off to work 

Read basic 3.4

Complete ex. 1-8

Concept list

Summary

Done with the 

other basics?