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Role of the urinary system - acidosis and alkalosis

By: HWC, Views: 7963

• Tubular cells of the proximal convoluted tubule and collecting tubules can alter filtrate pH and therefore blood pH. • These cells can affect blood pH with two coupled mechanisms: • Reabsorption of bicarbonate ions. • Secretion of hydrogen ions. • The reabsorption of bicarbonate...

Endocytosis -Types and Phagocytosis

By: HWC, Views: 7770

Endocytosis is the process by which a substance is brought inside a cell without having to pass through the cell membrane. It is the opposite of endocytosis, the process by which substances exit the cell without having to pass through the cell membrane. Exocytosis – membrane-enclosed secret...

Wound Repair Animation

By: Administrator, Views: 10740

A wound is an injury to living tissue caused by a cut, blow, or other impact, typically one in which the skin is cut or broken.

Bone cells and tissues - tissue composition and cells

By: HWC, Views: 8571

Bone tissue consists of bone cells secreting bone matrix. • The extracellular bone matrix is a connective tissue that is hard, yet flexible. • Collagen fibers provide flexibility. • Inorganic mineral salts (primarily calcium phosphate, or hydroxyapatite) provide hardness. • Togethe...

Bone elongation - processes at the epiphyseal plate

By: HWC, Views: 7986

• Interstitial lengthening occurs in only certain bones, primarily those of the appendages. • Such lengthening takes place at the epiphyseal plate, a layer of hyaline cartilage in the metaphysis of a growing bone. 1. Zone of resting cartilage. • Consisting of a hyaline cartilage pa...

Shoulder Movement Animation

By: Administrator, Views: 686

Four muscles—the supraspinatus, infraspinatus, teres minor, and subscapularis—make up the rotator cuff. It stabilizes the shoulder and holds the head of the humerus into the glenoid cavity to maintain the principal shoulder joint.

Movement of Joints Animation

By: Administrator, Views: 421

Types of body movement that occur at the diarthrotic joints: - Abduction - Adduction - Circumduction - Dorsiflexion

Humerus Rotation Animation

By: Administrator, Views: 448

Types of body movement that occur at the diarthrotic joints: - Rotation - Supination

Alzheimer's Disease

By: Administrator, Views: 10896

Alzheimer's disease (AD), also referred to simply as Alzheimer's, is a chronic neurodegenerative disease that usually starts slowly and gradually worsens over time. It is the cause of 60–70% of cases of dementia. The most common early symptom is difficulty in remembering recent events. As the d...