Contraceptives and Reproductive Health

  • Contraceptives can include:
    • Intrauterine device (IUD)
    • Birth control pill
    • Tubal ligation
    • Vasectomy
    • Uterine tube ligation (for females)

Sexually Transmitted Infections (STIs)

  • Types of STIs:
    • Bacterial infections
    • Viral infections
  • Treatment options:
    • Antibiotics can treat bacterial infections.
    • Antiviral medications can treat viral infections, but often it's easier to allow the virus to run its course.
  • Importance of maintaining a healthy microbiome in the sexual and reproductive organs.
    • Microbiome: the natural microorganisms that live in or around the body, including genitalia.
    • Balance of bacteria is crucial; an imbalance can lead to infections.
  • Factors that can disrupt the microbiome:
    • Stress
    • Various types of medications

Maintaining Sexual and Reproductive Health

  • Recommendations for health maintenance:
    • Annual doctor check-ups
    • More frequent testing with multiple sexual partners
    • Maintain good hygiene (wash with soap and water)
    • Pay attention to bodily changes: If something feels abnormal, consult a medical provider.

The Skeletal System

  • Key functions of the skeletal system:
    • Protection
    • Structure
    • Movement
    • Blood cell formation
    • Nutrient storage (primarily minerals)
  • Examples of function:
    • Protection: Skull protects the brain; rib cage protects heart and lungs during impacts.
    • Movement: Skeleton assists in sports and physical activity.
  • Types of bone tissue:
    • Compact bone (hard outer layer)
    • Spongy bone (inner web-like structure)
  • Bone Structure:
    • Osteocytes (bone cells) exist within small cavities.
    • Vascular components: Including arteries, veins, and nerves provide nutrients and sensations.
    • Haversian canal: Area part of bone housing vessels and nerves.

Bone Anatomy

  • Key components of a long bone:
    • Epiphysis (end of the bone)
    • Diaphysis (shaft of the bone)
    • Growth plate (epiphyseal plate)
  • Periosteum: a fibrous tissue covering the bone.
  • Bone marrow:
    • Site for blood cell production and mineral storage.
  • Stages of bone healing involve a balance between growth and decay; lack of balance can lead to osteoporosis.
  • Infants possess more bones that fuse together over time; especially relevant to the skull.
  • Importance of learning to label major bones in the skeletal system.

The Integumentary System (Skin)

  • Skin Structure:
    • Top layer: Stratum corneum (waterproofing layer made of dead skin cells).
    • Below that: Pseudostratified squamous epithelium and basement membrane (basal layer).
    • Epidermis: composed of the outer and inner layers.
  • Skin cancers:
    • Squamous cell carcinoma (most dangerous) originates in the stratum corneum.
    • Melanoma and basal cell carcinoma arise in the basal layer.

Healing and Skin Conditions

  • Healing responses include sloughing off dead skin cells during minor injuries.
  • Tattooing involves injecting ink into the dermis layer to ensure retention.
  • Sweat and oil glands are associated with hair follicles; erector pili muscle pulls hair upright.
  • Goosebumps: muscular contractions raising hair for thermal protection or emotional responses.
  • Individuals with eating disorders may develop more body hair due to inadequate fat layers under the skin affecting temperature regulation.

Skin Cancer Risk and Prevention

  • Risk factors for skin cancer:
    • Genetic predisposition
    • Chemical exposure
    • Excessive UV exposure
  • Prevention measures:
    • Wear protective clothing
    • Use sunscreen with SPF 30 or higher (SPF below 30 is deemed ineffective)
    • Avoid sun exposure during peak times (12 PM - 2 PM)
  • Importance of educating children and families about sun protection.

Course Logistics and Evaluation

  • Open note policy for the upcoming assessment.
  • Importance of filling out course evaluations submitted via email on December 1st.
  • Evaluations are anonymous and inform teaching practices for improvement.
  • Encouragement for students to communicate feedback candidly without concern for repercussions.
  • Best wishes for a safe holiday season and reminders about making wise choices.