Hierarchy
What is a tissue?
A group of similar cells that a work together to perform a specific function
Which two organs work together to support and move the body?
skeletal and muscular systems
What are the functions of the skeletal system?
It provides shape and support. Enables you to move. Protects your internal organs. Produces blood cells. Stores certain minerals (calcium and phosphorus) until your body needs them.
Why does the body sweat?
It cools the body to keep a constant temperature.
What is the function of the lymph nodes?
Contains lymph (clear fluid with white blood cells) and filters out pathogens
What does an organ consist of?
A group of tissues working together for a similar function
The body defends itself with which two body systems?
Integumentary and Immune
What is the difference between a tendon and a ligament?
A tendon is a tough cord that connects muscles to bones.
A ligament connects bone to bone.
How does the integumentary system work with the immune system?
Protects body from injury and infection
What is the function of the excretory system?
to remove waste from the body
What is an organ system? Give an example.
Groups of organs that work together for the same job. Example: Circulatory System.
What is the function of connective tissue?
It provides support and structure to the body, also fills spaces. It is the most abundant tissue in the human body.
How does the muscular system work with the digestive system?
The smooth muscles that line the digestive tract move the food along the digestive process
__________ carries oxygenated blood away from the heart. ____________ carries deoxygenated blood back to the heart.
Arteries; veins
How does a virus cause someone to get sick?
They invade the host cell, insert their DNA, and reproduce in the host cell.
How and why do we have different types of cells in the body?
Since multicellular organisms are made of more than one cell, the cells can specialize to have a specific function. Even though each cell has the same DNA, only specific genes are activated allowing for a cell to become specialized.
What are examples of connective tissue?
fat, blood, bones, cartilage
How does the skeletal system work with the circulatory system?
The bones make blood cells
How does the circulatory system work the digestive system?
The circulatory systems transports the nutrients that are absorbed by the small intestine.
What is a vaccine?
A weakened or dead virus that is placed inside your body to make your body's immune system build antibodies to it.
Apply each level of organization in your body to one specific body system (in order of hierarchy)
muscle cell, muscle tissue, muscle (organ), muscular system
What are the four types of tissue and give an example of each?
Epithelial (skin, lining of most organs); Muscle (cardiac muscle); Connective (blood, bones, fat, cartilage); Nerve (nerve cells, brain)
What are the different types of muscle tissue and where are each found?
smooth muscle (internal organs), cardiac muscle (heart), skeletal (voluntary muscles)
Why is it uncommon to get sick from the same pathogen?
The white blood cells make antibodies to fight the pathogen. Once they make the antibodies, the white blood cells have memory and if the pathogen infects the person again, they have the antibodies ready to fight it.
What is homeostasis and give an example?
Homeostasis is the process by which an organism’s internal environment is kept stable in spite of changes in the external environment. An example is how the the respiratory system and the circulatory system work together so that the body has oxygen.