Heart is located in mediastinum between lungs, size of fist. Divided into four chambers: two atria and two ventricles. Surrounded by pericardium sac containing fluid. Heart wall has three layers: epicardium, myocardium, and endocardium
Skeletal muscle enables movement and maintains posture, joining to bones via tendons. Smooth muscle is involuntary and found in digestive and urinary systems. Cardiac muscle is self-excitatory and found only in the heart
Two quadrilateral bones forming sides and roof of neurocranium. Located near midline of skull, posterior end. Each bone has two surfaces, four borders, and four angles
Upper limbs extend from scapulae to digits in upright vertebrates. Human upper limb divided into shoulder, arm, elbow, forearm, wrist and hand. Muscles classified by origin, topography, function or innervation
The occipital bone is a flat, trapezoid-shaped bone located at the lower back of the skull. It protects the brain and supports neck muscles. Forms the atlantooccipital joint with the first vertebra for head movement. Connects to the cervical spine and affects body movements and balance
Identify visible bones, muscles, and tendons through skin. Learn major bone shapes before smaller structures. Study joint connections and muscle movements. Focus on major muscle groups like quadriceps, hamstrings, and chest muscles