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8 Science Biology Revision
5
The Human Heart
Learning Intention: Revise important concepts learnt this by studying the organelles, organisational level, system and transplant of the human heart
Success Criteria: Demonstrate your knowledge by completing the group activities
Organelles
Cells
What organelles might be present in heart cells?
What is an organelle?
Remember...
Organelles are the parts within the cell that perform specific jobs.
Mitochondria
The powerhouse of the cell
Heart cells have increased energy demands
Cardiac Muscle Cells
Convert oxygen and glucose into energy
This forms adenosine triphosphate (ATP)
Recall:
Organelle Activity
Match the cell organelles to their functions
Model
Answer
Organisation levels
Organizational
Level
An organism (like the human) is made up of four levels of organisation
Cells
1.
Example 1
Tissues
2.
Levels
Organs
3.
Organ Systems
4.
What level would the heart be?
Cells
1.
Tissues
The Heart...
2.
Organs
3.
Organ Systems
4.
Sort:
Activity
Sort the terms into their organisational levels
Model Answer
What body system is the heart apart of?
System
The Circulatory System!
...
- The circulatory system delivers oxygen and nutrients to cells, as well as take away any waste.
- The heart pumps (or circulates) blood to organs and tissues all throughout the body
Diagram
Other body systems
What other body systems have we learnt about this term?
- Digestive System
- Respiratory System
- Male Reproductive System
- Female Reproductive System
- Flower Reproductive System
...
Activity
Distinguish the parts from the male and female reproductive systems
...
- Vas Deferens
- Fallopian Tubes
- Urethra
- Uterus
- Cervix
- Testes
- Labia Majora
- Prostate Gland
- Labia Minora
- Ovaries
- Epididymis
What is it?
Transplant Technology
Organ Transplant or Repair
Blood type
>
Key Points
Medical condition
>
- The process where damage organs are replaced with a new working organ or organ/tissue part.
- This process requires an organ donor who has to be registered
- The organ has to 'match' the recipient through tests
Distance
>
Predicted outcome
>
Rejection
Risks
- A process where the recipient's immune system 'rejects' the new organ by attacking it
- This can greatly damage the organ over time!
- The recipient then has to take immunosuppressent medication to reduce the immune systems function
Transplant Technology History
Technology
- First modern transplants done in early 1900's (Kidney transplanted in 1936)
- The collection of the donated organ and operation was successful, but the organ survival was not - scientists struggled with organ rejection until 1960
- in 1960, scientists developed anti-rejection drugs (like immune suppressants)
- Communication and transporting of organs has gotten way faster!
Whats next?
Scientists are discovering new ways to improve organ repair and transplant technology:
> 3D printed organs
> Growing organs and tissue on (or in) animals
The Future
Outline how transplant technology could impact the girls life.
Explain the pros and cons of the situation
What ethical issues do you need to consider?
Activity
A young girl needs a heart transplant, but her family are poorly educated and intimidated by modern medicine as they live in an under-developed country
Scientists grow human ear on mouse:
https://youtu.be/ZJOOQ7y0ehc
Videos
3D Printed Organs:
https://youtu.be/t9W-MBhrG2c