Science Review

What is the role of the brain in the nervous system?

• It receives and sends all the messages.

• It actually acts separately from the nervous system.

• It pumps fluid.

• It shirks and expands nerves and muscles in the body

Which organ helps to regulate sugar by producing insulin?

• Liver

• Kidney

• pancreas

• brain

What is the function on the heart?

(a)  

How do young amphibians breathe?

• using book lungs

• they have gills

• they have a respiratory system similar to humans

• they do not need to breath on land

What types of muscles shorten or relax to move bones?

• Nerves

• Skeletal

• Smooth

• cardiac

What type of muscle is found only in the heart

(a)  

True or False: Smooth muscles are involuntary and found in the walls of many internal organs, including the eye, respiratory organs, and digestive organs

• True

• False

Which of the following in an example of voluntary muscles?

• cardiac

• Smooth

• Skeletal

• respiratory

Invertebrates do not have backbone, many of them have a support structure called

• vertebrate

• exoskeleton

• invertebrates

• anthropod

In many plants, the leaves have a waxy coating. What is the function of the waxy coating?

• making food from the energy of sunlight

• keeping water inside the leaves

• taking in water from the air

• keeping the leaves cook in the summer and warm in winter