Life Science

Why does your heart rate speed up when you exercise?

• to keep up with your arms and legs

• so that red blood cells can drop of oxygen more times per minutes

• because the food molecules need to get through the digestive system

• because nitrogen is needed in the lungs

Your bones have specialized growing zones called _____ that are found at the end of your bones.

• spongy bone

• growth plate

• bronchial tubes

• compact bone

is (are) one type of lung disorder that makes breathing difficult for some people.

• allergies

• bone cancer

• asthma

• heart attacks

Choose the correct pathway a molecule of oxygen would take in the respiratory sytem.

• trachea, bronchial tubes, nose, alveoli

• esophagus, nose, bronchial tubes, alveoli

• nose, trachea, broncial tubes, aleveli

• esophagus, stomach, small intestines, circulatory system

What carries messages to your spinal cord and brain?

• plasma

• sensory neurons

• red blood cells

• motor neurons

_____ are living things that carry out functions like growing, reproducing, getting energy from food and respond to stimuli.

• atoms

• molecules

• cells

• cilia

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Body systems provide cells with basic needs such as food, oxygen, and waste removal.

• True

• False

Tags

NGSS.MS-LS1-3

Maintaining homeostasis in the human body only refers to keeping the body at 98.6 degrees Farenheit.

• True

• False

Tags

NGSS.HS-LS1-3

Oxygen molecules leave the respiratory system by the way of _______ and enter the circulatory system to get dropped off to cell throughout the entire body.

• cilia

• bronchial tubes

• diffusion

• exhaling

_____ such as the nervous, respiratory, circulatory, and skeletal systems all work together to help the human body which is a _____.

• subsystem, system

• homeostasis, system

• subsystem, diffusion

• systems, subsystems

Tags

NGSS.MS-LS1-3