Directions: Choose the letter of the correct answer. Write your answer on the space provided for. 1. Which is the longest bone in the body? A. Clavicle B. ulna C. radius D. femur 2. Ribs are bones at the side of the chest. Which of the following organs are protected by the ribs? A. Heart and lungs B. kidneys and gall bladder C. liver and intestines D. brain and stomach 3. A type of voluntary muscles that is controlled by the bones and responsible for all kinds of movements. A. Cardiac muscles B. smooth muscles C. skeletal muscles D. involuntary muscles 4.It is an organ in the body that secretes bile that aids in the digestion of fats. A. Pancreas B. liver C. intestines D. esophagus 5. What part of the brain is responsible for the control and coordination of motor movement and balance? A. Brain stem B. cerebellum C. cerebrum D. hypothalamus 6. What is the main organ of the respiratory system? A. lungs B. bronchi C. pharynx D. nostrils 7. Which of the following is a muscular organ that pumps blood throughout the body? A. Atria B. ventricles C. septum D. heart 8. The blank is the outer layer of the skin where hair is located. A. Dermis B. hair follicles C. epidermis D. fatty tissues
