Catalyst University
Why Do Cats Purr? THE SCIENCE!
This is a PURRfect video! 🐈 Ever wonder why cats purr? Or how they do it?
Catalyst University
Upper Limb Tension Tests (ULTTs) | Median Nerve Bias
In this video, I explain and demonstrate the median nerve tension test (AKA ULTT-1 or ULTT-A), a test used to diagnose nerve tension/adverse and arrow dynamics and that is also part of the cervical radiculopathy clinical prediction rule.
Catalyst University
Temporomandibular Joint 😲 Mastication Muscles
In this video, we explore the anatomy and physiology of the 4 muscles of mastication (chewing) - temporalis, masseter, and medial and lateral pterygoids. More specifically, we cover their origins, insertions, actions, innervation, and...
Catalyst University
SI Joint Special Tests | Cluster of Laslett
In this video, we explore the Cluster of Laslett, a test item cluster used in the diagnosis of SI joint dysfunction. Specifically, I explain and demonstrate the following special tests: thigh thrust, distraction, sacral thrust, and...
Catalyst University
TherEx | Quad Sets, Straight Leg Raises (SLRs) & Progressions
In this video, I demonstrate and explain correct technique for quad sets and the straight leg raise (SLR) along with one good progression of the exercise.
Catalyst University
TherEx | Levator Scapulae Stretch
In this video, I demonstrate a stretch to the levator scapulae muscles.
Catalyst University
Other Motor Tracts [Part 2] | Rubrospinal & Tectospinal Tracts
In this video, we explore two of the "less discussed" descending motor pathways: Rubrospinal & Tectospinal Tracts
Catalyst University
Cervical Rotation Lateral Flexion (CRLF) Test | Rationale & Interpretation
In this video, I explain and demonstrate the cervical rotation lateral flexion (CRLF) test, a special test used to evaluate patients with pain in the cervicothoracic junction and brachialgia.
Catalyst University
Biomechanics | Elbow/Biceps Torque Problem #1
Here, I work a basic torque problem at the elbow joint in biomechanics. The following considerations are used. [1] elbow at 90 degrees [2] weight of dumbbell in hand is considered [3] forearm weight NEGLECTED
Catalyst University
Alar Ligament Stress Test (with Rotation & Sidebending) | Demonstration & Interpretation
In this video, I explain and demonstrate the alar ligament stress test, which is used to assess integrity of the alar ligaments in the cervical spine. More specifically, we cover its rationale, interpretation of results, and psychometric...
Catalyst University
Abdominal Reflex | Procedure & Results Interpretation
n this video, I explain the abdominal reflex. More specifically, we discuss the reflex arc and how to determine whether or not the reflex is present/normal or abnormal.
Catalyst University
Anti-platelet Medications + Mechanisms of Action
In this video, we explore the major anticoagulant drugs that specifically inhibit platelets (anti-platelet drugs), including their mechanisms of action.
Catalyst University
Physiology of the Osteoclast
In this video, we discuss the following: [1] functions of osteoclasts and how they promote bone resorption [2] production of osteoclasts from macrophages [3] appearance of osteoclasts by Scanning EM
Catalyst University
Meningitis Tests | Brudzinski’s & Kernig’s Signs [+ Signs/Symptoms]
In this video, we explore the signs and symptoms of meningitis; and I explain and demonstrate three special tests used in the diagnosis of meningitis along with the rationale and interpretation of results. [1] Nuchal rigidity [2]...
Catalyst University
Median Nerve Glides EXPLAINED
In this video, I explain and demonstrate a couple variations of the MEDIAN nerve glide, which is used to treat a variety of conditions where adverse neural dynamics of the median nerve are involved.
Catalyst University
Cervical Self-Distraction | Purpose, Demonstration, & Dosing
In this video, I demonstrate and explain how to perform a cervical self-distraction, a technique used to help alleviate the effects of a cervical radiculopathy. Also covered are the theory and the dosing.
Catalyst University
The Sacroiliac Joint [Part 2] | Factors Affecting Stabilization
In this video, we discuss the major factors that confer stability to the sacroiliac (SI) joint. Also, we differentiate sacral nutation and counter-nutation and the associated restrictions in each movement.
Catalyst University
The Renin-Angiotensin-Aldosterone [RAAS] System
In this video, we will discuss: [1] why renin is released [2] how Angiotensin II, Aldosterone, and ADH are released [3] their biological effects
Catalyst University
Triceps Brachii and Elbow Extensors | Origin, Insertion, Action, & More
In this video, we explore the anatomy and muscles of the posterior brachium compartment: the triceps brachii and anconeus. Specifically, we explore the structure, origin, insertion, actions, and innervation.
Catalyst University
Sympathetic Structures (Gray and White Rami Communicantes) & Innervation to the Skin
In this video, we discuss the pathway for sympathetic innervation to the skin after briefly reviewing the part of the spinal nerve and rami communicantes.
Catalyst University
The PCL | Structure, Functions, & Special Tests
In this video, we explore the basic anatomy and functions of the PCL (posterior cruciate ligament) along with several special test used to diagnose a PCL pathology.
Catalyst University
Mechanical Traction | Theory, Indications, Contraindications, & Parameters
In this video, we explore the theory, indications, contraindications, and parameters for cervical and lumbar traction.
Catalyst University
Mechanism of Long-Term Potentiation of Synapses
In this video, we explore the purpose and biochemical mechanism of long-term potentiation in neurons in relevant neural circuits.
Catalyst University
LDL-mediated Cholesterol Delivery to Cells
In this video, we explore the mechanism of LDL-mediated cholesterol delivery to peripheral cells.