Unit 6 Review

Organ systems in the human body perform vital functions. Which organ system takes in oxygen through the mouth and nose and then sends out carbon dioxide?

• Nervous System

• Respiratory System

• Circulatory System

• Reproductive System

Which phrases does not define homeostasis?

A. A division of cells that make up the human body

B. Regulation of the environment outside the human body

C. Maintenance of stable environment inside the human body

D. Removal of waste materials produced by the cells of the human body

• A, B, C

• B,C,D

• A,C,D

• A,B,D

The digestive system is one of the major body systems. Which statement describes how the mouth, stomach and intestines work?

• It breaks down food into nutrients that the body can use.

• It returns fluids to blood vessels and helps get rid of bacteria and viruses

• It provides a frame to support and protect the body and allows the body to move

• It receives information about the body and the environment and responds to that information

A serious accident injures a person's lymph node. How will such an injury most likely affect the human body?

• It may interfere with growth and development

• It may interfere with the human body's ability to fight disease

• It may interfere with the digestion of food and the removal of wastes

• It may interfere with the human body's ability to receive and respond to information about the human body and the environment

Which of the following BEST describes the main function of the nervous system?

• To deliver nutrients and other essential materials to cells and remove waste products

• To break down the nutrients found in food so that they can be used by all cells in the human body

• To produce the chemical signals that allow parts of the human body to communicate over long distance

• To coordinate all other human body systems so they can function together to maintain homeostasis

How do your respiratory and circulatory systems attempt to maintain homeostasis during exercise?

• Your body produces more red blood cells to help provide energy to cells

• Your lungs produce more oxygen which is then delivered to the cells through the blood

• You experience a decrease in blood flow which provides nutrients to cells to increase energy and wastes

• You experience an increase in breathing rate to obtain more oxygen which is delivered to cells through the bloodstream

Tags

NGSS.MS-PS3-5

Each organ system in the human body is made up of structures that work together. Look at the picture above. Which of the following BEST describes the main function of the organ system in the diagram?

• To take in water and maintain water balance

• To take in oxygen and eliminate carbon dioxide

• To produce antigens to fight infections

• To obtain food and break it into smaller nutrients

What is the main function of the circulatory system?

• To remove wastes in the blood

• To break down food so that bit can be used by the human body

• To transport important nutrients to all part of the human body

• To communicate signals between distant parts of the human body

To maintain homeostasis, the organ systems of the human body work to keep the human body's internal water level constant. Which of the following statements describes how the human body responds when its internal water level drops too low?

• The skeletal system produces more circulating blood cells that increase the body's waters intake

• The excretory system signals the kidneys to retain water more and produce more concentrated urine water loss

• The nervous system signals the muscles to constrict, holding more water in the digestive track and decreasing water loss

• The excretory system signals the kidneys to release more water into the bladder to increase water loss

The lungs, nose and mouth work together to control the oxygen intake. What level of organization do they represent as a group?

• Cells

• Organs

• Organ System

• Tissue