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HOMEOSTASIS 1. Define homeostasis 2. Homeostatic mechanisms are controlled by the _________________ and __________________ systems. 3. In a ________________ _________________ ________________ the original stimulus is increased. 4. In a ________________ _________________ ________________ system the original stimulus is decreased. 5. Many conditions in the body are monitored (blood pressure, heart rate, and body temp). ____________________ is any disruption in a controlled condition. These can come from the internal or external environment. 6. _______________________ is a body structure that monitors changes and sends information to the control center. 7. ________________________ determines ranges that should be maintained, receives input and sends out commands. 8. _________________________ is a body structure that receives output from the control center. ORGAN SYSTEMS 1. Organs include the liver, gall bladder, large intestine, and esophagus _______________ 2. Name two functions of the urinary system 3. All glands and tissues that produce hormones are a part of the __________________ system. 4. ____________________ system is the skin and structures associated with it. 5. Contains lungs and airway passages ________________________. 6. Regulates body activities through nerve impulses ______________________. 7. Functions in body movement, posture, and heat production _________________. 8. Breaks down food and absorbs nutrients ________________________. 9. Protects the body, detects sensations, and helps regulate body temperature _____________________. 10. Eliminates waste and regulates the chemical composition of blood ______________________________. BODY REGIONS 1. Before we describe any body parts or use directional terms, we assume the body is in _______________ __________________. Name the scientific body region: J. Back of the leg A. Skull K. Neck B. Head L. Anterior surface of the knee C. Ear M. Lateral part of the leg D. Groin N. Mouth E. Foot O. Area of back between ribs and hip F. Toes P. Breastbone area G. Armpit Q. Wrist H. Back of the head/base of the skull R. The posterior surface of the lower leg; the I. Buttocks. calf. DIRECTIONAL TERMS 1. _______________________ toward the head or the upper part of a structure 2. _______________________ nearer to or at the front of the body 3. _______________________ away from the surface of the body 4. ________________________ farther from the midline 5. _______________________ nearer to the midline 6. _______________________ farther from the point of attachment __________ 7. structures appear above other structures and __________ structures appear below other structures. 8. __________________ structures appear closer to the midline than _____________ structures 9. A plane that divides the body into right and left parts __________________. 10. A frontal plane divides the body into ________________ and ________________ parts. 11. Your ears are __________________ and __________________ to your shoulders and ___________________ to your nose. 12. The three major body planes are ___________________, ___________________, and _____________________. 13. ______________________ planes divides the body into _____________ and inferior positions. BODY CAVITIES A. The _________________ cavity contains the brain and the _______________ cavity contains the spinal cord. B. __________________ region which is the central portion of the thoracic cavity and contains all thoracic organs except the lungs. C. The “chest cavity” which contains pleural and pericardial cavities and the mediastinum _______________________. D. Contains the stomach, spleen, liver, gall bladder, small intestine and most of the large intestine _______________________. E. Subdivided into the abdominal and pelvic cavities ____________________________. F. Contains three smaller cavities – the pericardial cavitiy and the two pleural cavities ______________________. G. Extends from the diaphragm to the groin _____________________. H. Contains the urinary bladder, portions of the large intestine, and internal organs of the reproductive system. I. __________________ cavity includes the cranial and spinal cavities. J. ____________________ is a muscle that separates the abdominal and thoracic cavities. OTHER 1. Put the following terms in order of increasing complexity. tissue, cellular, chemical, organismal, organ, organ system. 2. _____________ group of similar cells 3. ______________ different tissues that perform similar functions 4. _______________ group of organs that perform similar functions. For each of the following terms, label them as directional terms, cavities, body planes, or body regions. a. frontal i. lateral b. pubic j. inferior c. cephalic k. cranial d. abdominopelvic l. cephalic e. superior m. orbital f. gluteal n. transverse g. transverse h. medial