nervous and muscular system

The human brain is made of 100 billion neurons. Each neuron has a nucleus that contains genes.

• tissue

• system

• organ

• cell

Which cell relays messages from one tissue to another?

• Red Blood Cell-RBC

• White Blood Cell-WBC

• Neuron

• Tissue

Tags

NGSS.MS-LS1-3

NGSS.MS-LS1-8

Neurons are primarily composed of this organ?

• heart

• skin

• brain

• skull

What level of structure is represented by the diagram?

• organ

• organ system

• cell

• tissue

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

The function of sneezing is to expel mucus containing foreign particles from the nasal cavity. A person sneezes when foreign particles pass through the nasal hair which triggers the release of chemical that activates body system causing sneezing. What body part is activated?

• circulatory system

• digestive system

• nervous system

• excretory system

Which system is responsible for the overall control of all the internal processes that occur in the body?

• muscular system

• nervous system

• digestive system

• skeletal system

Tags

NGSS.MS-LS1-8

The brain has 3 major sections that send and receive signals to control all the activities that keep a person functioning efficiently. Which major section controls breathing and heart beat?

• cerebellum

• cerebrum

• brain stem

• cortex

Which 2 body systems interact and initiate movement?

• muscular and nervous system

• skeletal and muscular system

• respiratory and nervous system

• circulatory and nervous system

The muscles in the wall of the blood vessels contract or relax to vary the blood flow. Which body system regulates the contraction and relaxation of the muscles?

• digestive system

• excretory system

• skeletal system

• nervous system

Tags

NGSS.HS-LS1-3

What is the main function of the nervous system?

• clean waste from the cells
• absorb nutrients for energy
• deliver messages to the brain

Tags

NGSS.MS-LS1-8