Body Structures and Homeostasis

Homeostasis

• keeps everything exactly the same.

• acts to keep the internal environmental conditions outside the normal range

• usually operates by positive feedback systems.

• is the ability to maintain a relatively stable internal environment

Tags

NGSS.HS-LS1-3

Which type of feedback system is more common in maintaining homeostasis?

• postive

• neutral

• negative

• balanced

Tags

NGSS.HS-LS1-3

This feedback system amplifies (increases) a change until a desired outcome is reached.

• positive feedback system

• negative feedback system

• neutral feedback system

• self-monitoring feedback system

Tags

NGSS.HS-LS1-3

What type of feedback system does the model represent?

• negative

• neutral

• positive

• glycogen

Tags

NGSS.HS-LS1-3

The main purpose of the ____________ system is to break food particles into pieces that can be used.

• circulatory

• digestive

• respiratory

• skeletal

What is responsible for delivering oxygen and removing carbon dioxide from the body?

• cell nucleus

• excretory system

• nervous system

• respiratory system

What body system works closely with the circulatory system in order to exchange oxygen and carbon dioxide?

• skeletal

• Digestive

• Respiratory

• Muscular

The actual site of gas exchange within the lungs

• alveoli

• nose

• trachea

• bronchi

The basic unit of structure and function in the nervous system is a nerve cell. Nerve cells are also called-

• Osteocyctes

• Neurons

• Dendrites

• Spinal Cord

Which system controls and coordinates all other body systems?

• Nervous

• Muscular

• Circulatory

• Digestive

Tags

NGSS.MS-LS1-3