human anatomy lung and digestive

simple squamous epithelial cells to promote rapid diffusion of gases

almost cuboidal in shape and produces pulmonary surfactant.

(dust cells) engulfs any microorganism.

• visceral pleura- tightly adheres to the outside of the lung.
• parietal pleura- lines the pleural cavity itself
• pleural cavity- the space between these 2 layers

teeth, tongue, salivary glands, liver, gall bladder, pancreas.

• segmentation- is a mixing motion while its moving forward
• peristalsis- just the movement or wave of contraction to move the crap forward

• 3 pairs of salvitary glands
• 1)parotid gland
• 2) submandibular gland
• 3)sublingual gland
• saliva works to kill bacteria, chemical digestion (even though most of this happens in the small intestine) moistens and cleans and lubricates.

secrete mucin which forms mucus upon hydration.

secretes a watery fluid containing ions, lysozyme and salivary amylase.

mucosa, submucosa, muscularis, serosa.

creates chyme as it continues the digestive tracts mechanical and chemical digestion.

secretes gastrin

secretes pepsinogen (brakes down protein)

secretes HCl and intrinsic factor

• has both endocrine and exocrine functions
• exocrine functions involve secreting digestive enzymes and BICARBONATE collectively called pancretic enzyme.