Biology Courses and Certifications

Lecturio Medical

Histology - USMLE Prep Videos

Explore how normal human tissues are structured and function, from epithelial layers and glands to the heart, blood vessels, and respiratory system.

• YouTube
• 6 hours 33 minutes
• Self-Paced
• Free Video

Ninja Nerd

Renal Physiology

Trace kidney function from glomerular filtration through the nephron and collecting duct to autoregulation and the micturition reflex.

• YouTube
• 5 hours 5 minutes
• Self-Paced
• Free Video

Ninja Nerd

Biochemistry and Metabolism - Complete Course

Follow the regulation and integration of carbohydrate, lipid, and protein metabolism across pathway maps, from glycolysis and the Krebs cycle to lipoproteins.

• YouTube
• 15 hours 42 minutes
• Self-Paced
• Free Video

Ninja Nerd

Endocrine Physiology

Follow how pituitary signals and hormone pathways coordinate the thyroid, adrenal glands, pancreas, and reproductive cycles.

• YouTube
• 8 hours 47 minutes
• Self-Paced
• Free Video

Ninja Nerd

Cardiovascular Physiology

A stepwise look at how cardiac structure and electrical activity shape pumping, circulation, and blood pressure.

• YouTube
• 9 hours 2 minutes
• Self-Paced
• Free Video

Ninja Nerd

Immunology - Inflammation, Adaptive Immunity, and Immune System Overview

Trace how inflammation, innate defenses, antibodies, and T cells contribute to the immune response.

• YouTube
• 3 hours 42 minutes
• Self-Paced
• Free Video

Ninja Nerd

Musculoskeletal System - Muscle Structure, Function, and Mechanics

Trace how muscle structure, neuromuscular signaling, and contraction mechanics shape muscle function.

• YouTube
• 7 hours 1 minute
• Self-Paced
• Free Video

Dr. Najeeb Lectures

Neuroanatomy - Neuroscience - Neurophysiology - Neurology

Connect brain regions, tracts, and cranial nerves to clinical findings such as epilepsy, nerve lesions, and raised intracranial pressure.

• YouTube
• 1 day 14 hours 43 minutes
• Self-Paced
• Free Video

Dr. Najeeb Lectures

Neuroanatomy - Neurophysiology - Neuroscience

Explore brain structures and pathways through detailed anatomy lessons, including cranial nerve anatomy and clinical correlates.

• YouTube
• 2 days 7 hours 7 minutes
• Self-Paced
• Free Video

Dr. Najeeb Lectures

Human Physiology - Comprehensive Medical Course

Mechanistic lectures trace physiology from cellular signals and membrane potentials to the functions of the heart, blood, kidneys, lungs, and reproductive system.

• YouTube
• 2 days 14 hours 42 minutes
• Self-Paced
• Free Video

Dr. Najeeb Lectures

Cardiac Physiology - Comprehensive Course

Explains how cardiac electrical activity and the cardiac cycle produce heart sounds and ECG patterns, then connects these mechanisms to common cardiac disorders.

• YouTube
• 1 day 4 hours 54 minutes
• Self-Paced
• Free Video

Dr. Najeeb Lectures

Blood Physiology

A twelve-part walkthrough of the coagulation cascade anchors lessons on blood cell formation, blood groups, anemia, and related blood conditions.

• YouTube
• 7 hours 4 minutes
• Self-Paced
• Free Video

Dr. Najeeb Lectures

Blood Supply to Central Nervous System - Circle of Willis and Neuroanatomy

A detailed walkthrough of the brain’s blood supply and Circle of Willis, with an anatomical and clinical look at subdural hemorrhage.

• YouTube
• 3 hours 37 minutes
• Self-Paced
• Free Video

Dr. Najeeb Lectures

Blood Physiology - Complete Course on Hematology and Coagulation

A multipart walkthrough of the coagulation cascade anchors lectures on blood cells, erythrocyte indices, and related disorders.

• YouTube
• 7 hours 28 minutes
• Self-Paced
• Free Video

Dr. Najeeb Lectures

Respiration and Gas Exchange

Trace carbon dioxide transport and gas exchange through respiratory physiology, from hypoxia to pulmonary circulation and lung function.

• YouTube
• 4 hours 14 minutes
• Self-Paced
• Free Video