Which of the following is true about the circulatory system in animals

• In insects, the circulatory system is open, with the blood flowing freely in the body cavity.

• Fish have a single-loop circulatory system with a two-chambered heart.

• Birds and mammals have a three-chambered heart and a double circulation system.

• Annelids possess a closed circulatory system with a heart consisting of multiple pairs of muscular vessels.

What is the function of the circulatory system in animals?

• To transport oxygen and nutrients to the body's cells

• To remove waste products from the body

• To regulate body temperature

• All of the above

Which of the following animals have a opened circulatory system?

• Insects

• Fish

• Birds

• Annelids

Which of the following animals generally have a three-chambered heart?

• Fish

• Reptiles

• Amphibians

• Mammals

Which of the following statements is true regarding the circulatory system in insects?

• Insects have an open circulatory system.

• Insects have a double-loop circulatory system.

• Insects have a three-chambered heart.

• Insects have a closed circulatory system.

Which of the following animals have a double-loop circulatory system?

• Insects

• Fish

• Birds

• Annelids

Which of the following is not a type of muscle tissue in the human body?

• Cardiac muscle

• Skeletal muscle

• Nervous muscle

• Smooth muscle

What is the function of ligaments in the human body?

• To connect muscle to bone

• To store calcium and phosphorus

• To allow smooth movement of bones at the joints

• To connect bone to bone

What is the function of tendons in the human body?

• To connect muscle to bone

• To store calcium and phosphorus

• To allow smooth movement of bones at the joints

• To connect bone to bone

What is the main function of the muscular system?

• Production of heat

• Transport of nutrients

• Protection of internal organs

• Communication through the nervous system