Circulatory/Respiratory
Integumentary/Digestive
Skeletal/Muscular
Nervous/Endo/Urinary/Exc
Ecology
100

What are the smallest blood vessels called?

Capillaries

100

What is the first layer of the skin called?

Epidermis

100

A tough band of tissue that connects bone to bone

Ligament

100

The part of the nerve cell that carries messages to the cell body 

Dendrite

100

Who is responsible for taking care of our groundwater?

Everyone

200

What are the clusters of thin-walled air sacs surrounded by capillaries called?

Alveoli

200

Which organ connects your mouth to your stomach?

Esophagus

200

_________ muscles are what you CAN'T control and ________ muscles are what you CAN control. 

Involuntary and Voluntary

200

What does the pineal gland produce?

Melatonin

200

What fuels the flow of energy through an ecosystem?

The Sun

300

Blood does not run backwards in the heart because of these structures

Valves

300

What protects skin and helps maintain body temperature?

Hair

300

A rubbery layer of tissue that acts as a shock absorber and friction reducer found at the end of bones where they form joints

Cartilage
300

The two parts of the nervous system are the _________ and the __________.

Central and Peripheral

300

In this picture which organism is the autotroph?

Grass

400

What is main muscle of the respiratory system?

Diaphragm

400

In __________ digestion, food is broken down by enzymes.

Chemical

400

Name the three different types of muscles found in the body

Skeletal, Cardiac, and Smooth

400

The internal stability or regulation of steady, life maintaining conditions inside an organism is called __________.

Homeostasis

400

Which term describes the number of different biotic species in an area?

Biodiversity

500

Using only the four main chambers of the heart, what is the correct order of blood flow?

Right Atrium, Right Ventricle, Left Atrium, Left Ventricle

500

Which part of your skin gathers information? 

Nerves/Nerve Receptors

500

A tough, tight-fitting membrane that covers the bone's surface is called the __________.

Periosteum

500

The part of the kidney responsible for filtering the blood.

Nephron

500

The area near Earth's surface where the pores contain a mixture of air and water is a region called the _________________, and the area farther beneath the surface where pores  are completely filled with water is called the ________________________.

Unsaturated Zone and Saturated Zone