Lesson 5
Blood at Work
Blood at Work
These small parts of blood help form clots so blood does not keep leaking from an injury
platelets
This body system breaks down food so nutrients can enter the body.
the digestive system
A group of similar cells that work together to perform a function is called this.
a tissue
This representation helps explain or predict how something works
a model
This liquid part of blood carries cells and dissolved materials, including nutrients and waste
plasma
This system takes in oxygen and removes carbon dioxide through gas exchange.
the respiratory system
What can cause an injured foot to swell?
Fluid from blood can collect in the injured tissue.
Name the four systems that the foot injury could directly affect: bones, muscles, skin, and nerves.
Skeletal, muscular, integumentary, and nervous systems.
Which blood cells carry oxygen and carbon dioxide? Which help the body respond to injury and infection?
Red blood cells carry gases. White blood cells help the body respond to injury and infection
This system filters blood and removes waste and extra water.
the urinary system
This body system responds to injury and helps the body begin healing.
the immune system?
Name two systems that help the body respond to injury or heal
circulatory, immune, or endocrine.
Explain how the heart and blood vessels help blood reach different parts of the body.
The heart pumps blood, and blood vessels provide pathways throughout the body
This basic unit of living things makes up body organs and structures.
a cell
How can the endocrine system help the body adjust its response to an injury?
It sends hormones that help adjust body processes and responses.
A student’s breathing and heart rate change after running up stairs. What does this show about body systems?
Body systems interact. A change in activity can affect more than one system
Blood looks like one liquid. Why use a microscope to study it, and what should you adjust if the image is blurry?
A microscope reveals smaller parts of blood. Adjust the focus to make the image clear.
Explain how the digestive, respiratory, and urinary systems each interact with blood
Nutrients enter blood after digestion. Oxygen enters blood and carbon dioxide leaves it during gas exchange. The urinary system filters blood.
Put these in order from smallest to largest, and explain how they relate: organ, cell, organ system, tissue.
Cell, tissue, organ, organ system
After studying body systems, what unanswered question about the injured foot still needed investigation?
What fills the gaps created by an injury?