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5 Written questions

5 Matching questions

  1. What is a positive feedback mechanism?
  2. What is hypotonic?
  3. What are the types of chemical reactions in the body?
  4. What is the cell nucleus and what is its function?
  5. What are the 3 most popular body planes?
  1. a A solution with lower salt concentration than in the cells
    (cells burst) MORE WATER THAN IN CELL
  2. b the response to stimuli does not stop but rather keeps the sequence of events going. (requires an external brake)
    EX: cervical stretching during childbirth
  3. c Nucleus is within the cytoplasm and has a nuclear membrane with nucleoli and chromosomes of the cell. Nucleolus is where DNA and all genetic info for human traits lies.
  4. d synthesis reactions: bonds are formed to join two or more atoms to make a new compound
    (ex: proteins are sythesized by the bonding of many amino acids)
    decomposition reactions: bonds are broken and a large molecule is changed to two or more smaller ones
    (ex: digestion of starch into many smaller glucose molecules)
  5. e 1. Sagittal plane which divides left from right (cut down the middle would be mid-sagittal)
    2. Frontal plane which divides the body front to back (Coronal)
    3. Transverse plane which is a horizontal plane that separates the body into upper and lower portions (cuts you at belly button into upper body and lower body)

5 Multiple choice questions

  1. 1. Epithelial membranes
    2. Connective Tissue membranes
  2. diffusion of water through a selectively permeable membrane. water will move from an area with more present to an area with less water present. takes place in the kidneys which reabsorb large amounts of water. FOR WATER
  3. Serous membranes are in closed body cavities where the serous fluid prevents friction between the two layers of the serous membrane.
    ---Thoracic cavity: partial pleura lines chest wall and cisceral pleura covers the lungs.
    ---Pericardial sac: parietal pericardium lines the fibrous pericardium and the visceral pericardium covers the heart muscle.
    ---Abdominal cavity: peritoneum lines the abdominal cavity and mesentary covers the abdominal organs
  4. 1. Blood- plasma, RBC, WBC and platelets
    2. Areolar- Subcutaneous. Connects skin to muscles. Mucous membranes
    3. Adipose- Subcutaneous. Sores excess energy in fat. (insulation)
    4. Fibrous- Tendons and ligaments and dermis of skin (strong)
    5. Elastic- Walls of large arteries and alveoli in lungs (promotes normal exhalation and helps maintain blood pressure)
    6. Bone- Support the body, protect internal organs, store calcium and contain and protect red bone marrow
    7. Cartilage- Wall of trachea to keep airway open, on joint surfaces to prevent friction, tips of nose and outer ears. Absorbs shock between vertebrae
  5. ability of the body to maintain a relatively stable metabolism and to function normally despite changes

5 True/False questions

  1. What is a hormone and what does it do?A buffer system is a chemical or pair of chemicals that minimizes changes in pH by reacting with strong acids or strong bases
    (ex: buffer bonds to H+ ions when body fluid is becoming too acidic or release H+ ions when fluid becomes too alkaline)

          

  2. What is an enzyme and what does it do?Catalyst: speed up reactions without the use of external energy or heat

          

  3. What is contained in the thoracic cavity?urinary bladder and reproductive organs

          

  4. What is mitosis?Cell division involving one cell with the diploid number of chromosomes dividing into two identical cells.
    (used for repair of tissues and growth of the organism)

          

  5. Describe a Hydrogen bond?Covalent bonds share electrons between atoms
    (ex: H20 or water)

          

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