Lecture Notes: Healthcare and Anatomy Overview

Introduction

• Overview of the importance of human anatomy and physiology for healthcare students.
• Key body systems to be covered: Respiratory, Cardiovascular, Digestive, Nervous, Muscular, Reproductive, Integumentary, Endocrine, Urinary, Immune, Skeletal.
• Focus on concepts needed to pass the ATI TEAS test.

Anatomical Terminology and Positions

• Common Terminology: Head, Skull (cranial), Face (facial), Forehead (frontal), Base of the skull (occipital), Temple (temporal), Eyes (orbital/ocular), Ears (optic), Cheek (buccal), Nose (nasal), Mouth (oral), Chin (mental), Neck (cervical), Breast bone (sternal), Chest (thoracic), Shoulder (acromial), Shoulder blade (scapular), Spine (vertebral), Lower back (lumbar), Back (dorsal), Armpit (axillary), Arm (brachial), Forearm (anti-brachial), Wrist (carpal), Hand (manual), Fingers (digital/phalangeal), Abdomen (abdominal), Navel (umbilical), Hips (coxa), Tail bone (coxal), Buttock (gluteal), Pelvis (pelvic), Pubis area (pubic), Groin (inguinal), Thigh (femoral), Knee (patella), Shin (crural), Calf (sural), Foot (pedal), Ankle (tarsal), Toe (digital/phalangeal), Heel (calcaneal).

• Positions:

  • Anterior: Toward the front.
  • Posterior: Toward the back.
  • Superior: Towards the head.
  • Inferior: Towards the feet.
  • Medial: Toward the midline.
  • Lateral: Away from the midline.
  • Proximal: Closer to the trunk of the body.
  • Distal: Further from the trunk of the body.

• Planes:

  • Sagittal/Median: Divides the body into right and left halves.
  • Frontal/Coronal: Divides the body into anterior and posterior halves.
  • Transverse/Cross-section: Divides the body into superior and inferior halves.

Body Systems Overview

Respiratory System

• Structure: Nose, mouth, throat, larynx, trachea, bronchi, lungs.
• Function: Oxygen intake and carbon dioxide release.
• Gas exchange: Occurs in alveoli.
• Diseases: Pneumonia, bronchitis, asthma.
• Factors affecting the system: Diseases, mucus buildup, smoking, pollution, allergies.

Cardiovascular System

• Components: Heart, blood vessels (arteries, veins, capillaries), blood.
• Heart: Four chambers - right/left atrium, right/left ventricle.
• Blood Flow: Circulatory path from heart to lungs/body and back.
• Cardiac Cycle: Systole (contraction) and Diastole (relaxation).
• Electrical System: Sinoatrial node, atrioventricular node, Bundle of His, Purkinje fibers.
• Functions: Oxygen/nutrient delivery, waste removal, blood pressure maintenance, temperature regulation.

Digestive System

• Components: Mouth, esophagus, stomach, small intestine, large intestine, rectum, accessory organs (teeth, tongue, salivary glands, liver, gallbladder, pancreas).
• Process: Begins with mechanical and chemical digestion in the mouth, ends with waste excretion.
• Enzymes/Hormones: Gastrin, CCK, secretin, insulin, glucagon, bile.

Nervous System

• Divisions: Central Nervous System (CNS - brain, spinal cord), Peripheral Nervous System (PNS - nerves).
• Neurons: Basic unit - cell body, dendrites, axon.
• Types of Neurons: Sensory (afferent) and motor (efferent).
• Subdivisions: Autonomic (involuntary), Somatic (voluntary).

Muscular System

• Types of Muscle:
  • Skeletal: Voluntary, striated.
  • Cardiac: Involuntary, striated.
  • Smooth: Involuntary, non-striated.
• Function: Movement via contraction, cooperation with nervous system.

Reproductive System

• Male Components: Testes, epididymis, vas deferens, seminal vesicles, prostate gland, penis.
• Female Components: Ovaries, Fallopian tubes, uterus, vagina, vulva.
• Hormones: Gonadotropin, follicle stimulating, luteinizing hormones, testosterone, estrogen.

Integumentary System

• Components: Skin, hair, nails, sweat glands.
• Skin Layers: Epidermis (outer), dermis (middle), subcutaneous (inner).
• Functions: Protection, temperature regulation, sensation.

Endocrine System

• Glands: Pituitary, thyroid, parathyroid, thymus, adrenal, pancreas, testes.
• Functions: Regulation of growth, metabolism, reproduction, mood.
• Feedback Mechanisms: Positive (e.g., childbirth) and negative (e.g., blood sugar regulation).

Urinary System

• Components: Kidneys, renal cortex, renal medulla, ureters, bladder, urethra.
• Function: Filtration, waste excretion, blood pressure regulation.

Immune System

• Defense Systems: Innate (first line - physical barriers), Adaptive (second line - antibodies, lymphocytes).
• Immunity Types: Passive (e.g., maternal antibodies), Active (self-produced antibodies).

Skeletal System

• Bone Types: Long, short, flat, irregular.
• Functions: Support, protection, movement, blood cell production.
• Relationship with Muscles: Movement via tendons, facilitated by the nervous system.

Conclusion

• Understanding these systems is crucial for passing the human anatomy portion of the ATI TEAS.
• Additional resources available on Nurse.com for further study.