The animal's digestive tract forms from the _______.

The embryo layer that forms the skin and nervous tissue is the _____.

The ectoderm is on the outside of the developing embryo.

The innermost layer of the blastocyst is the

The middle layer of the blastocyst is the

Circulatory and respiratory systems are developed from:

The embryo layer that forms the skin and nervous tissue is the _____.

Single layer of cells surrounding a fluid-filled space that forms during early development

All invertebrates ______.

This group makes the biggest fraction of animals

in protostomes which forms first?

in deuterostomes which forms first?

You are a

you are a

You are hot and start to sweat, this is an example of

Which system provides support for the body, protects vital organs like the brain and lungs, and is where new blood cells are made?

Which system has glands that produce hormones like testosterone, estrogen, and adrenaline (epinephrine)?

Which system is responsible for thinking, emotions, and controlling movement?

Which system is blood a part of and is also responsible for pumping blood around the body?

Which system is different between males and females and is needed to make babies?

Which system breaks down food and absorbs the nutrients?

Which system connects to the bones to move them?

Which system includes the kidneys which filter the blood of waste to make urine?

Which are the four levels of biological organization from smallest to largest?

contains muscles and tendons

contains bones, ligaments, cartilage and joints

contains lymph vessels and nodes

contains kidneys, ureters, bladder, urethra

contains mouth, esophagus, stomach, intestines, liver, pancreas, gallbladder

contains heart and blood vessels (arteries, capillaries and veins)

contains skin, hair, nail, sweat and oil glands

contains brain, spinal cord and nerves

communication and coordination with nerve impulses from the external and internal environment

produce sound, transport gases, eliminates waste, filters and breathe

physically and chemically breaks down food, absorbs nutrients and eliminates waste

movement of the bodies organs, posture, production of heat to help maintain body temperature

In fishes, pharyngeal pouches may develop into

Fewer than 5 percent of all animal species have

The RED arrow is pointing to the ________side of the leg

The BLUE arrow is pointing to the ________side of the leg

The arrow is pointing to which side of the dog?

The arrow is pointing to which side of the dog?

What tissue type covers the body?

Which germ layer produces the nerve cells and sense organs of an organism?

Which of the following is characteristic of all chordates, but not found in invertebrates?

A coelom is a body cavity

A person goes to the doctor because she has been extremely cold for several weeks and seems unable to regulate her body temperature. It would be reasonable for the doctor to look at which two body systems?

The concentration of sense organs and nerve cells at the anterior end of an animal is called

The heart is made of

Bones are made of

Protection and absorption are functions of

Skin is an example of