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Week 14
Term | Definition |
---|---|
Accessory organs assisting in the process of digestion | Salivary glands, teeth, pancreas, liver, gallbladder. |
Propulsion | Movement of food along the digestive tract. |
Bronchial tree | 1. Primary bronchi: right & left branch from trachea. 2. Secondary bronchi: one per lobe. 3. Tertiary bronchi: one per bronchopulmonary segment. 4. Bronchioles: smooth muscle, no cartilage. 5. Terminal bronchioles: non-ciliated simple cuboidal. |
Functions of the lymphatic system | 1. Maintains blood volume by transporting leaked fluids back to the blood. 2. Provides a defense system against disease. 3. Transports digested lipids from lacteals in the small intestines. |
Thyroid hormones (T3 & T4) | 1. Increases cell metabolism. 2. Important in normal tissue growth. 3. Produced by follicular cells. |
Calcitonin | 1. Decreases blood calcium levels. 2. Stimulates osteoblasts, inhibits osteoclasts. 3. Produced by C cells (parafollicular cells). |
Parathyroid hormone (PTH) | 1. Secreted by chief cells (principal cells). 2. Increases blood calcium levels. 3. Stimulates osteoclasts, absorption of calcium in digestive tract, reabsorption in the kidneys. |
Pancreas | 1. Alpha cells: produce GLUCAGON which triggers the breakdown of glycogen in the liver, thus increases blood glucose levels. 2. Beta cells: produce INSULIN which increases the uptake of glucose into the cells, thus decreases blood glucose levels. |
Anastomosis | Two or more blood vessels join and supply the same body region. |
Liver | 1. Stores excess nutrients and releases them when needed. 2. Produces bile to aid in the digestion of fats. 3. Detoxifies drugs and metabolites. 4. Produces plasma proteins. |