Philip is suffering from a condition in which his body is ac

Philip is suffering from a condition in which his body is accumulating waste products in his blood a. digestive system b muscular system b. muscular system c. lymphatic system d. urinary system Natalie is swimming in the 200 meter backstroke competition. Which body system are her muscular a. respiratory system b. lymphatic system c. nervous system d. cardiovascular system Which of the following cavities is most vulnerable to injury duo to minimal enclosure by bone? a. abdominal cavity b. cranial cavity c. vertebral cavity d. thoracic cavity Which of the following best describes a negative feedback mechanism? a. the response is in the same direction as, and reinforces the stimulus b. the response is greater than the stimulus c. the response is in the opposite direction to and reverses the stimulus d. none of the above is correct

Solution

Answer for 1st one is urinary or excretory system. If urine filtration is not proper, accumulation of nitogen waste materials takes place in blood

Answer for 2nd one is respiratory system. it is because swimming needs energy and energy is produced by Respiratory system

Also in 8 & 9 the answers are correct