Body Systems

This organ is the largest organ in the body and belongs to this system:

• Heart-Circulatory System

• Brain-Nervous System

• Small Intestine-Digestive System

• Skin-Integumentary System

This part of the heart is the part that receives the oxygen rich blood from the lungs and pumps it into the left ventricle:

• Right atrium

• Left atrium

• Right ventricle

• Aorta

This organ system caries nutrients throughout the body, so that specialized cells can perform specialized functions. This body system is the:

• Digestive System

• Integumentary System

• Circulatory System

• Respiratory System

A drop of blood has more red or white blood cells?

• Red

• White

This body system defends the body against disease:

• Digestive System

• Integumentary System

• Immune System

• Circulatory System

A neuron receives messages from small branches of the nerve cell called:

• Axons

• Interneurons

• Somatic Nerve

• Dendrites

The liver is a very important organ in the excretory system. The function of this organ is to convert a highly toxic substance into a less harmful substance. The highly toxic substance that is converted into urea in the excretory system is:

• Hydrochloric acid

• Ammonia

• Sodium Chloride

• Gastric Juice

Each body system works with other body systems to perform its function effectively. When different gases are exchanged in the lungs and then transported throughout the body, the systems working together are the:

• Respiratory and integumentary

• Respiratory and digestive

• Respiratory and circulatory

• Respiratory and sensory

Sensory awareness is important for all living things, so they can respond and adapt to their environment. When your muscles "quiver" because you are cold, they generate:

• Waste

• Heat

• Blood Flow

• A nutrient imbalance

One purpose of the skeleton is to:

• Process food

• Transport oxygen to the bodys cells

• Protect internal body parts

• Scare little kids