7th Grade Sci

 A. The diagrams below represent two systems of the human body.Which two systems are represented in the diagrams?(1) endocrine and skeletal(2) endocrine and respiratory(3) circulatory and respiratory(4) circulatory and digestiveB. Base your answers to questions 61 and 62 on the diagram below, which represents several parts of the human digestive system, and on your knowledge of science.61 Describe one way that food is mechanically changed during the process of digestion. [1]____________________________________________________________________________________________________________________________________________________________________________62 Two other human body systems are listed below. Circle one body system from the list and describe how that body system works together with the digestive system. [1]Circle one: circulatory skeletal Description: ___________________________________________________________________________C. Base your answers to questions 55 and 56 on the flowchart below and on your knowledge of science. The flowchart illustrates how the human body usually reacts to a harmful situation. 55 Identify the cause and the effect in this flowchart. [1] Cause: _________________________________________________________________________________ Effect: _________________________________________________________________________________ 56 Explain the purpose of a quick body response like pulling a hand away from a hot stove. [1]D. The diagram below shows a human organ system. Which human organ system is shown? (1) nervous (3) circulatory (2) digestive (4) respiratoryE. Which human organ system produces hormones to regulate growth, development, and reproduction? (1) circulatory (3) nervous (2) digestive (4) endocrineThe arrows show the directions of blood flow. Letters A and B represent locations in this system. 62 Identify the human organ system responsible for the movement of blood shown in the diagram. [1] ___________________________ system 63 State one reason why blood at location B contains more oxygen than blood at location A. [1]The diagram below shows part of the human excretory system. The structures shown are primarily involved in (1) transporting blood (3) removing wastes (2) producing sex cells (4) breaking down food7 Which human organ system eliminates liquid and gaseous wastes from the body? 1) circulatory (3) excretory (2) endocrine (4) reproductive 8 Which human organ system produces hormones to regulate growth, development, and reproduction? (1) circulatory (3) nervous (2) digestive (4) endocrine9-Insulin and glucagon are hormones that affect blood sugar levels. The diagram below shows the feedbacksystem used by the human body to increase and decrease blood sugar levels. This feedback system is one way that the human body(1) circulates gases (3) destroys viruses(2) maintains equilibrium (4) transports nutrients-The diagram below shows a human arm bending at the elbow.Which two body systems most directly cause the arm to bend?(1) skeletal and muscular(2) reproductive and endocrine(3) respiratory and excretory(4) nervous and digestiveThe diagram below shows several organs in the human digestive system. Explain two ways that food is changed as it passes through the digestive system. [2] (1) ___________________________________________________________________________________ ___________________________________________________________________________________ (2) ____________________ ................
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