Orientation and Introduction to the Human Body

Nursing Program Progression and Clinical Requirements

The nursing curriculum is structured as a series of levels, each incorporating specific clinical or laboratory components. The first level consists of Foundations of Nursing, which includes in-person skills labs and virtual clinicals, alongside the study of Anatomy and Physiology and Medical Terminology. Level two focuses on Pharmacology and marks the beginning of in-person clinical rotations. Level three covers Medsurge, level four covers Mental Health, and level five involves Maternity, all of which involve continuing in-person clinicals. Level six addresses Pediatrics, and level seven involves integrated nursing studies, both of which maintain in-person clinical requirements. The final stage, level eight, is the integrated finishing portion where students complete their in-person clinical rotations.

Technical Access and Online Platform Utilization

Students must gain proficiency in several digital platforms, including Populi, ExamSoft, and Evolve textbooks. Accessing course lectures via Zoom can be achieved through two primary methods. First, students may use a direct link sent via email from Standard Healthcare Services College of Nursing notifications. Second, students can log into the Populi platform, navigate to the conferences tab, and select "Join Conference" for the specific course, such as HCE 120: Anatomy & Physiology/Medical Terminology. During these sessions, students should utilize Zoom features such as the "Raise Hand" function located in the reactions or participants tab to ask questions and the chat function for written communication with the instructor or the entire class.

Academic Expectations and Professional Conduct

Online course lectures must be treated with the same level of decorum as on-campus attendance. Student engagement with peers and instructors is mandatory. To facilitate this, every student is required to have a functioning camera and microphone. Cameras must remain turned on and the student must be visible throughout the entire lecture. It is strictly prohibited for students to join a class while driving or riding in a vehicle. Furthermore, account security is critical; no third party may log into a student account to attend classes, complete coursework, or take examinations on the student's behalf.

Professionalism extends to online etiquette and environment. Students are expected to join from a quiet, suitable location and minimize distractions such as barking dogs, television sounds, or conversations with family members. Courteous and respectful behavior is required at all times, and the use of profanity or socially offensive language in any communication medium—emails, discussion posts, or group projects—is forbidden. Visual standards require students to dress modestly, cleanly, and professionally. Inappropriate background images or settings are prohibited, and students must remain in a professional posture, meaning they may not participate in class while lying in bed or on a couch.

Attendance, Tardiness, and Absence Policies

Attendance is verified at the start of class and periodically throughout the session. There is a 10-minute grace period at the beginning of class, but students are otherwise expected to be present for the full duration of the lecture. Tardiness is defined as failing to report on time or leaving early even if the student eventually returns. A tardy exceeding fifteen minutes is equivalent to a one-hour absence, and a total of three tardies is calculated as one full absence. If a student spends less than 50% of the scheduled hours in a class or clinical session, they are marked absent for the day.

Absences may be excused if the student notifies the instructor in advance or within one day of the missed lecture and provides supporting documentation. Excused absences are capped at 10% of the total course hours. If a student misses a single class beyond the excused limit, they may be eligible for a make-up. Eligibility for a make-up requires documentation, a meeting with an administrator, and the completion of specific tasks: watching the recorded lecture and submitting a one-page summary to both the instructor and administration.

Foundations of Anatomy, Physiology, and Pathophysiology

Anatomy is defined as the study of the structure of the human body, whereas physiology focuses on the functions of those structures. The discipline of modern anatomy originated in the European Renaissance, characterized by the use of dissection to understand internal systems. In contemporary practice, medical imaging technologies allow for the non-invasive visualization of the interior body. These include X-rays, Computed Tomography (CT) scans, and Magnetic Resonance Imaging (MRI). Pathophysiology is a specialized branch that examines abnormal changes in body functions. Mastery of these subjects is aided by resources such as Kenhub, Teach Me Anatomy, and specialized educational series like those found on the RegisteredNurseRN YouTube channel.

Structural Levels of Biological Organization

The human body is organized into a hierarchy of increasing complexity. The levels of organization are as follows:

$\text{Chemical Level (Atoms/Molecules)} \rightarrow \text{Cellular Level (Cells)} \rightarrow \text{Tissue Level (Tissues)} \rightarrow \text{Organ Level (Organs)} \rightarrow \text{System Level (Organ Systems)} \rightarrow \text{Organism Level (The Human Body)}$

The cell is the smallest measure of living things. Tissues are groups of cells working together for a specific function. Organs are collections of tissues that perform a synchronized role. Organ systems are groups of organs collaborating toward a common goal. For example, a hepatocyte is a cell within the liver; liver tissue forms the organ known as the liver; the liver is a component of the gastrointestinal system; and all systems together form the human organism. A similar hierarchy exists in other systems, such as the nervous system, where the progression follows: Neuron $\rightarrow$ Collection of cells $\rightarrow$ Brain $\rightarrow$ Nervous System $\rightarrow$ Human Body.

Anatomical Positioning and Directional Terms

To ensure consistency in medical communication, the body is always described as being in the "anatomical position." In this standardized stance, the body is upright, the head and feet point forward, and the arms are at the sides with palms facing forward. Concepts of "left" and "right" are always from the patient's perspective, which appears reversed to an observer. Directional terms provide precise locations of body parts relative to one another:

• Superior and Inferior: Superior means toward the head ($\text{e.g.}$, lungs are superior to the feet), while inferior means toward the feet.
• Anterior and Posterior: Anterior (or ventral) refers to the front of the body ($\text{e.g.}$, the nose). Posterior (or dorsal) refers to the back of the body ($\text{e.g.}$, the buttocks).
• Medial and Lateral: Medial signifies a position toward the midline of the body ($\text{e.g.}$, the nose), while lateral signifies a position further from the midline ($\text{e.g.}$, the ears).
• Proximal and Distal: These terms describe proximity to the trunk of the body. Proximal is closer to the trunk ($\text{e.g.}$, the knee is proximal to the foot), while distal is further away ($\text{e.g.}$, the hand is distal to the elbow).
• Superficial and Deep: Superficial refers to structures closer to the surface ($\text{e.g.}$, skin or hair), while deep refers to structures further inside ($\text{e.g.}$, bones).

Body Planes and Sectional Divisions

Body planes are imaginary flat surfaces used to "cut" or subdivide the body for study or medical imaging. The three primary planes are:

• Sagittal Plane: Runs vertically and divides the body into right and left portions. A midsagittal (or median) plane divides the body into equal halves exactly at the midline. A parasagittal plane divides the body into unequal left and right portions.
• Frontal (Coronal) Plane: Runs vertically and divides the body into anterior (front) and posterior (back) sections.
• Transverse (Horizontal) Plane: Divides the body into superior (top) and inferior (bottom) portions.
• Oblique Plane: Any cut made at an angle that is not horizontal or vertical. These are often referred to as "odd angles."

Body Cavities and Abdominopelvic Regions

The internal body is not solid but contains open spaces called cavities that house various organs. The Dorsal cavities are located at the back and include the Cranial cavity (containing the brain) and the Vertebral cavity (containing the spine). The Ventral cavities are located at the front and include the Thoracic cavity (containing the heart and lungs) and the Abdominopelvic cavity (containing the stomach, liver, intestines, and reproductive organs). The diaphragm serves as the physical barrier separating the thoracic cavity from the abdominal cavity.

The abdominopelvic area is further divided into quadrants or nine specific regions for medical assessment. The four quadrants, divided by the median and transumbilical planes, are the Right Upper Quadrant (RUQ), Left Upper Quadrant (LUQ), Right Lower Quadrant (RLQ), and Left Lower Quadrant (LLQ). Alternatively, the nine regions are organized as follows:

• Top row: Right hypochondriac, Epigastric, and Left hypochondriac regions.
• Middle row: Right lumbar, Umbilical, and Left lumbar regions.
• Bottom row: Right iliac, Hypogastric, and Left iliac regions.

Homeostasis and Feedback Mechanisms

Homeostasis is the process by which the body maintains relatively constant internal conditions necessary for survival. This requires the regulation of temperature, food, water, and oxygen levels. This stability is maintained through self-regulating feedback loops. Negative feedback loops are the most common and work to reverse a change to return the body to its set point. Positive feedback loops amplify a change or process until a specific outcome is reached. Examples of positive feedback include childbirth (contractions), breastfeeding, and platelet aggregation during blood clotting.

Regional Anatomy and Medical Terminology

Medical terminology for body regions is categorized by difficulty. Level 1 (Easy) includes terms such as Abdominal, Dorsal, Facial, Frontal, Nasal, Oral, Pelvis, and Thoracic. Level 2 (Intermediate) includes Cranial, Gluteal, Inguinal, Lumbar, Mammary, Orbital, Palmar, and Umbilical. Level 3 (Hard) includes terms such as Axillary (armpit), Brachial (arm), Carpal (wrist), Cephalic (head), Cubital (elbow), Digital (fingers/toes), Tarsal (ankle), and Orbital (eye area). Understanding these terms is essential for identifying specific locations of clinical interest.