OpenSciEd 6.6 Cells and Systems L.1-6

___ cells are long and stringy so that they can stretch and contract, allowing parts of the body to move.

• muscle
• bone
• skin

___ are structures that allow blood to move throughout the body

• Blood vessels
• Red Blood Cells
• White Blood Cells
• Blood Plasma
• Blood Platelets

Nerves follow a similar pathway to blood vessels throughout the body.

• True
• False

___ cells squish together to create protective layers that keep things in or out of the body

• muscle
• bone
• skin

___ cells have a very unique structure that is suited for their function--they have long, skinny “branches” or “tentacles” protruding from a central portion that allow them to make connections to other nerve cells.

• blood
• nerve
• platelet
• plasma

The ___ and ___ are both parts of the wing system and interact for the wing to move.

• skin and muscles
• muscles and bones
• bone and skin

___ help fight infection in the body

• Blood vessels
• Red Blood Cells
• White Blood Cells
• Blood Plasma
• Blood Platelets

___ is a yellow-ish liquid that carries nutrients, water, waste, and food particles throughout the body.

• Blood vessels
• Red Blood Cells
• White Blood Cells
• Blood Plasma
• Blood Platelets

Interactions between what three parts cause them to work together to support the wing’s/foots function.

• blood, nerves, and muscles
• blood, vessels, and vein
• skin, muscle, and bone

Nerve cells allow the brain to keep track of processes throughout the body, including voluntary processes, like the movement of the arms and legs, as well as involuntary processes, like ___.

• swimming
• running and walking
• breathing and the continuous beating of the heart.
• thinking