HESI A2 Practice Test Questions and Answers

HESI A2 Practice Test Questions and Answers A person who has torn their vastus lateralis muscle will need which of the following? a) an arm sling b) a cane or crutches c) insulin d) a neck brace ANSWER b) a cane or crutches The vastus lateralis muscle is a voluntary muscle in the legs. It is part of the quadriceps. Muscles produce contraction due to the sliding of: a) filaments b) sarcomeres c) flexors d) neutrons ANSWER a) filaments During muscle contraction, filaments slide together by using energy supplied by ATP. The medulla oblongata has what primary responsibility? a) balance b) intellect c) vital functions d) sensory input ANSWER c) vital functions The medulla oblongata is responsible for basic vital functions, including respiration and heart rate. Which of the following is true about simple reflexes? a) they travel through the entire body b) they travel only through the spinal cord c) they travel only through the brain d) they do not travel and remain localized ANSWER b) they travel only through the spinal cord