Endoskeleton

Most endoskeletons are made of.....

• cartilage

• fluid

• bone

A skeleton that is on the inside of a living thing is called an ______________.

• exoskeleton

• endoskeleton

• botanist

• external structure

Which of the following animals has an endoskeleton?

• Jellyfish

• Earthworm

• Shark

• Snail

What is the primary function of an endoskeleton?

• Protection from external damage

• Support and movement

• Water retention

• Nutrient absorption

Endoskeletons are primarily composed of which two materials?

• Bone and cartilage

• Chitin and calcium

• Silicon and protein

• Keratin and cellulose

Which of the following is a characteristic of an endoskeleton?

• It is located outside the body

• It grows with the organism

• It is shed periodically

• It is made of chitin

In vertebrates, the endoskeleton is part of which system?

• Digestive system

• Nervous system

• Skeletal system

• Respiratory system

Which of the following is NOT a function of the endoskeleton?

• Blood cell production

• Mineral storage

• Hormone production

• Protection of internal organs

Which type of endoskeleton is found in humans?

• Hydrostatic

• Cartilaginous

• Bony

• Chitinous

How does the endoskeleton contribute to movement?

• By contracting muscles

• By providing attachment points for muscles

• By expanding and contracting

• By producing energy