50. EYE
ANATOMY OF THE EYE: The eye is a special sense organ responsible for sight. It is spherical in shape, about 2.5 cm in diameter, and located within the orbital cavity.…
51. EAR
Introduction: The ear is the organ of hearing. The eighth cranial nerve carries sound sensations to the cerebral cortex of the brain, where interpretation occurs. Most parts of the ear…
52. SKIN
Introduction: The skin is the body’s largest organ, made up of water, proteins, fats, and minerals. It protects the body from germs, regulates body temperature, and contains sensory nerves that…
53. TONGUE AND NOSE
TONGUE AND NOSE TONGUE: The tongue is a muscular organ in the mouth covered with a moist, pink tissue called the mucosa. It plays a vital role in licking, tasting,…
54. HISTOLOGY OF SKELETAL MUSCLE
HISTOLOGY OF SKELETAL MUSCLE Histology is the study of the microscopic structure of animal or plant tissues. The study of human tissue is an example of histology. The body contains…
55. PHYSIOLOGY OF MUSCLE CONTRACTION
PHYSIOLOGY OF MUSCLE CONTRACTION When scientists first examined the electron micrographs of skeletal muscle in the mid-1950s, they noticed that the lengths of thick and thin filaments remained the same…
56. PHYSIOLOGICAL PROPERTIES OF SKELETAL MUSCLE AND THEIR DISORDERS
Physiological Properties of Skeletal Muscle All muscle cells share several important physiological properties — contractility, excitability, extensibility, and elasticity. These properties enable muscles to perform movement, maintain posture, and respond…