3. Your carry blood back to the heart.

  • A. veins
  • B. capillaries
  • C. arteries
  • D. aorta

6. The human system is a group of organs that break down food in order to absorb its nutrients.

  • A. respiratory
  • B. circulation
  • C. digestiveет
  • D. skeletal

27. The thorax or theis a part which is located between the neck and the abdomen.

  • A. chest
  • B. abdomen
  • C. back-bone
  • D. limb

2. The system pumps nutrients and oxygen around the body.

  • A. circulatory
  • B. digestive
  • C. respiratory
  • D. skeletal

1. Your allow oxygen to circulate through the body.

  • А. red blood cells
  • B. plasma
  • C. platelets
  • D. clots

7. is a muscular tube that passes food to the stomach.

  • A. large intestine
  • B. colon
  • C. esophagus
  • D. small intestine

8. is a very important part of the large intestine.

  • A. colon
  • B. stomach
  • C. esophagus
  • D. jejunum

4. A is a structure that opens and closes.

  • A. capillary
  • B. valve
  • C. artery
  • D. aorta

10. Your carry blood from to the heart.

  • A. atrium
  • B. arteries
  • C. vein
  • D. capillaries

5. The human system is a series of organs responsible for taking in oxygen and expelling carbon dioxide.

  • A. respiratory
  • B. circulation
  • C. digestive
  • D. skeletal

11. The bones of the include the spinal column, the ribs and the breastbone.

  • A. trunk
  • B. skeleton
  • C. heart
  • D. limb

14. The system consists of the kidneys, two ureters, the bladder and the urethra.

  • A. nervous
  • B. respiratory
  • C. digestive
  • D. urinary

12. The most important part of the skeleton is .

  • A. bones of the head
  • B. the spine
  • C. tibia
  • D. humerus

9. The muscular hollow organ that contains strong acid and used to digest food is

  • A. stomach
  • B. liver
  • C. intestine
  • D. kidney

16. The organ that removes harmful toxins like alcohol from the body is

  • A. heart
  • B. lungs
  • C. brain
  • D. liver

13. The consists of two chambers, left and right.

  • A. atrium
  • B. ventricle
  • C. heart
  • D. artery

23. The primary organs of the system are, which carry out this exchange of gases as we breathe.

  • A. respiratory, lungs
  • B. circulatory, lungs
  • C. respiratory, kidney
  • D. circulatory, heart

19. A or is an arm or a leg of a person.

  • A. limb, extremity
  • B. limb, thigh
  • C. extremity, spinal column
  • D. skeleton, spinal column

15. The blood oxygen in the.

  • A. receives, lungs
  • B. receives, kidneys
  • C. helps, lungs
  • D. helps, kidneys

18. The liver works as a part of the system by producing juices to break down food in the stomach.

  • A. respiratory
  • B. digestive
  • C. nervous
  • D. urinary

29. The sacs in the lungs that allow oxygen to enter the blood are

  • A. alveoli
  • B. bronchial tubes
  • C. intestines
  • D. capillaries

28. The helps to control all of the body systems and organs, keeping them working like they should.

  • A. spinal column
  • B. brain
  • C. heart
  • D. skeleton

17. Your bodys biggest organ is your

  • A. skin
  • B. brain
  • C. heart
  • D. liver

20. The bone is the largest bone in the human body.

  • A. radial
  • B. femur
  • C. fibular
  • D. ulna

24. The is the last part of the digestive system. It absorbs water from the indigestible food.

  • A. anus
  • B. small intestine
  • C. large intestine
  • D. colon

21. The tubes carry air from the windpipe to the lungs.

  • A. bronchial
  • B. epithelial
  • C. vascular
  • D. healthy

22. A pair of spongy, air-filled organs in the chest that people use to breathe are

  • A. kidneys
  • B. lungs
  • C. eyes
  • D. ureters

30. The main organ in the nervous system is ...

  • A. heart
  • B. lungs
  • C. brain
  • D. liver

26. The part of the body that connects the hand and the arm is a

  • A. leg
  • B. limb
  • C. wrist
  • D. fist

25. The movement of the blood through the body is

  • A. respiration
  • B. circulation
  • C. digestion
  • D. absorption