Hierarchy and Homeostasis

The skeletal system is the body system that is involved in movement and protection

of internal organs. The illustration shows the skeletal system of humans.

What are the different organs that make up the skeletal system?

• skeletal muscles and smooth muscles

• cells, tissues, organs, organs that work together

• bones, cartilage, tendons, and ligaments

• the individual bones

The illustration below shows one of the human body systems.

What is the function of this system?

• transports substances to all cells of the body

• provides nutrients to the body

• prevents infections from spreading through the body

• eliminates wastes from the body

Organ systems work together to meet the needs of the human body. How is the skeletal system related to the nervous system?

• The brain determines how the skeleton develops.

• The skeletal system controls the nervous system.

• The brain and spinal cord hold the skeleton together.

• The skeleton protects the brain and spinal cord.

Groups of similar cells that perform a specific function in an organism.

• organ

• tissue

• organism

• cell

A state of balance in the body.

• tissue

• organism

• cell

• homeostasis

A collection of tissues that carry out a specialized function of the body.

• organ

• cell

• tissue

• multicellular

A body tissue that carries an electrical message back and forth between the brain and other parts of the body.

• epithelial tissue

• nervous tissue

• connective tissue

• muscle tissue

A group of organs that work together to perform a specific function.

• muscle tissue

• organ systems

• epithelial tissue

• nervous tissue

Tissue that has the ability to shorten and stretch to produce movement and include types like smooth, cardiac and skeletal tissue.

• epithelial

• connective

• nervous

• muscular

When you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed.

• Positive Feedback Response
• Negative Feedback Loop