Drawing of a human heart, labeling the different parts

Physiology: Inside the Body's Inner Workings

Next available start date:

Sunday, June 1, 2025

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Explore the intricacies of the human body and delve into the core principles of physiology. This online course provides a comprehensive understanding of how organ systems function, adapt, and interact. From the mechanics of breathing to the complexities of the cardiovascular system, you'll gain valuable insights into the fascinating world of human physiology. Start your journey of discovery today!

Program Dates

Choose the course length that works for you: Multi-length courses available throughout the year

Eligibility

For students ages 13 and up

Individual Course Fees

$1,795

Explore the Wonders of Human Physiology

Learn How Gases and Fluids Interact in the Body

Understand the gas laws that govern respiration and fluid balance in the body. Explore how oxygen and carbon dioxide are exchanged in the lungs and how pressure gradients affect fluid movement.

Explore the Dynamics of Blood Flow and Airflow

Learn about the laws of physics that govern the movement of fluids—both liquids and gases—within the body. Investigate factors influencing blood flow and airflow, and understand how pressure changes can impact organ function.

Investigate the Mechanics of Breathing

Discover the intricate mechanisms that govern lung function and oxygen delivery. Examine the factors that influence breathing, gas exchange, and the transport of oxygen throughout the body during rest and exercise.

Understand the Interplay of Organ Systems

Analyze the balance between oxygen supply and demand and how various systems work together to maintain homeostasis. Learn how the body regulates blood pressure, pH, and responds to challenges like blood loss.

Learn about Internal Stability and Steady State

Examine the principles of physiological balance and how the body maintains a stable internal environment. Discover how changes in input, production, or elimination affect substances in the body.

Discover Acid-Base Balance in the Body

Dive into the chemistry of life and explore how the body maintains balance. Explore the mechanisms that regulate pH in different bodily fluids and the consequences of disruptions to this delicate equilibrium.

Male student taking the Harvard Medical School Pre-College Online Courses

How You Will Benefit

  • Learn how your body maintains balance and responds to internal and external changes.
  • Understand the principles behind critical physiological processes like breathing, blood flow, and fluid regulation.
  • Apply essential physiological concepts to real-world scenarios encountered in clinical settings.
  • Develop problem-solving skills by integrating knowledge across different body systems.
  • Develop critical thinking and problem-solving skills applicable to various scientific disciplines by completing multiple courses.
  • Earn a Certificate of Completion from Harvard Medical School for each course, an addition to your college applications.

Three Learning Advantages Designed for You

College-Level Content
  • The program grants you access to college-level material, quizzes, and other engaging content designed by doctors, scientists, and professors from Harvard Medical School — the perfect fit if you envision a future in medicine or STEM. 
  • This content is similar to the courses that incoming students at Harvard Medical School take, including those pursuing medical, dental, and immunology graduate programs. They are designed to help prepare students for the challenging curriculum ahead.
Mentoring

Gain support from an expert mentor who’ll help answer questions and enrich your experience. Here’s what to expect:

  • Guidance in your course’s particular medical science field.
  • Encouragement and direction throughout the course. 
  • Inspiration, motivation, and confidence to help you succeed.
Flexible Learning
  • 100% online learning that works with your schedule.
  • Enjoy flexible, engaging video lessons that you can watch whenever it’s convenient for you.
  • Multiple medical science courses can be taken to maximize your learning experience.
  • Approximately 30 hours of total instruction and activities per course, including multimedia, simulations, and curated quizzes and content.

Apply Now for the Next Available Course

Taught by HMS Faculty

Richard M. Schwartzstein | Physiology Professor | Harvard Medical School
Richard M. Schwartzstein, MD

Ellen and Melvin Gordon Professor of Medicine and Medical Education, Harvard Medical School

Schwartzstein is also the Director of the Academy at Harvard Medical School. At the Beth Israel Deaconess Medical Center, he serves as the Director of the Center and the Chief of the Division of Pulmonary and Critical Care Medicine for Education. As a pulmonary and critical care doctor, he focuses primarily on caring for patients with lung disease and those in the ICU.

Meet Your Mentors

Throughout your Pre-College HMX Program experience, you can expect to receive guidance and support from a mentor who is well-versed in your course’s medical science subject. They’ll reach out to you regularly through the online Canvas inbox as you make your way through the program, help keep you on track to receive your Certificate of Completion, and are available to answer your course-related questions. Their purpose is to motivate, encourage, and inspire you with the confidence needed to succeed academically in the program. Learn more about your course mentors below.

Jaymar | Pre-College HMS Physiology Course Mentor
Jaymar

Holds a Precision Medicine Certificate as well as a doctorate in pharmacy. Jaymar is currently working towards becoming a licensed pharmacist in the state of Massachusetts and aspires to be a practicing clinical pharmacist. Jaymar is passionate about utilizing his medical science expertise to help patients achieve optimal health outcomes, and students pursue their own careers in medicine.

Sarafina | Pre-College HMS Physiology Course Mentor
Sarafina

Holds a Bachelor of Science in Nursing. With over a decade of nursing experience, Sarafina is a certified case manager whose specialties include patient care and infection prevention. Health care is her passion, and she enjoys helping students navigate the rigors of pre-health education so that they can one day join the field.

Quinn | Pre-College HMS Physiology Course Mentor
Quinn

Holds both a Bachelor of Science and a Master of Science in Nursing and is an active Family Practice Nurse Practitioner. She also has specific advanced practice nursing experience in surgery, clinical research, public health, and primary care. Quinn is passionate about sharing knowledge, fostering critical thinking skills, and instilling values of empathy and compassion in pre-health students. 

Female student applying to the Harvard Medical School Pre-College Online Courses

How To Apply:

It’s easy. No transcripts or letters of recommendation are required. Just provide some basic information and tell us why you wish to take this program.

Note: Please submit all application materials in English.


Begin the guided application process. It should take only a few minutes of your time to answer the questions.

Want to Know More?

Sign up for more information and we’ll be in touch.

Admissions

Our application process is easy. You can expect a prompt decision.

Frequently Asked Questions

How will you be graded? How much time do you have to turn around a project? When do you find out if you're accepted? Find answers to your questions here.

Scholarships

We offer need-based scholarships for participating students who exhibit high potential and an inability to pay the full tuition. 

  • If you haven’t applied to the program, apply here. After submitting your application, click “Apply for a need-based scholarship” on the confirmation page to request a scholarship.  
  • If you’ve already applied to the program, sign in to your profile to check your scholarship status. If we don’t have a scholarship request on file, click “Apply for a need-based scholarship” to request a scholarship.