Nursing Notes

Anatomy and Physiology

  • Homeostasis:

    • The process by which the body maintains a stable internal environment.

    • Involves regulation of temperature, pH, fluid balance, and other vital conditions.

    • Maintained through feedback mechanisms (negative and positive).

  • Osmosis:

    • The movement of water across a semi-permeable membrane.

    • Driven by differences in solute concentration.

  • Water Molecule Flow: Water molecules flow from a less concentrated solution (hypotonic) to a more concentrated solution (hypertonic).

    • This movement aims to equalize solute concentrations on both sides of the membrane.

  • Water Absorption in Roots:

    • Water moves from the soil into plant roots via osmosis.

    • Root hairs increase surface area for absorption.

    • Water follows the concentration gradient established by mineral content within root cells.

  • Oxygen Intake in Dogs:

    • Dogs take in oxygen during inspiration through passive diffusion in the alveoli of the lungs.

    • Oxygen moves from an area of high concentration (alveoli) to an area of low concentration (blood).

  • Functional Unit of Lungs: The alveoli.

    • Tiny air sacs where gas exchange (oxygen and carbon dioxide) occurs between air and blood.

  • Functional Unit of Kidneys: The nephron.

    • Filters blood, reabsorbs essential substances, and secretes waste products to form urine.

  • Brain and Hearing: The temporal lobe is associated with hearing.

    • Contains the auditory cortex, which processes sound information.

  • Occipital Lobe: Associated with vision.

    • Contains the visual cortex, responsible for processing visual stimuli.

  • Cerebellum Injury: Can cause difficulty in balancing.

    • The cerebellum coordinates movement and maintains posture; injury leads to impaired motor control.

  • Semi-Circular Canals: Located in the inner ears.

    • Fluid-filled tubes that detect rotational movements of the head.

  • Function of Semi-Circular Canals: Balancing.

    • Work with the cerebellum to maintain balance.

  • Identifying Elements: A flame test can identify certain elements based on the color of flame produced when heated.

    • Potassium (K): Lilac or purple flame

    • Sodium (Na): Yellow or orange flame

    • Calcium (Ca): Orange-red flame

  • Identifying Starch: An iodine test identifies starch, such as in potatoes.

    • Iodine solution turns dark blue or black in the presence of starch.

  • Human Skeleton: Made up of 206 bones.

    • Provides support, protection, and facilitates movement.

  • Spinal Column: Has 33 vertebrae.

    • Protects the spinal cord and supports the body.

  • Longest Bone: Femur (thigh bone).

    • Extends from the hip to the knee.

  • Skull: Consists of 22 bones.

    • Protects the brain.

  • Smallest Bone: Stapes (in the middle ear).

    • Involved in transmitting sound vibrations.

Nursing Procedures & Patient Care

  • Immediate Action Before Procedure: Wash hands.

    • Reduces the risk of infection and prevents the spread of microorganisms.

  • Greatest Risk of Electrolyte Imbalance: A child who is vomiting and has diarrhea.

    • Vomiting and diarrhea can