Exam5 Flashcards
Structure of lower respiratory tract ..
Trachea , bronchi tree, lungs
Structure of upper respiratory Tract..
Nose, pharynx, larynx
Role of surfactant..
Substance that helps reduce surface tension in the alveoli and keeps them from collapsing as air moves in and out during respiration
Role respiratory mucosa ?
The mucus serves as an air purification mechanism by trapping inspired irritants (dust and pollen)..
Location of respiratory mucosa?
Lines the air distribution tubes in the respiratory tree.
Location of “Adams apple”
Thyroid cartilage ( in larynx) just below the pharynx
What happens to the thorax during inspiration ?
Thorax enlarges in size
What happens to the thorax during expiration ?
Thorax returns to its smaller size (resting size & shape)
Tidal volume (TV)?
Amount normally breathed in or out with each breath.
Respiratory center in the brain is what?
Medulla
Accessory organs of the GI system?
Teeth and tongue, salivary glands, parotid, submandibular, sublingual, liver, gallbladder, pancreas, vermiform appendix.
Layers of the digested tract?
Mucosa, submucosa, muscularis, serosa.
Largest salivary gland is what?
Parotid gland
Sequence of small intestines ?
Duodenum, jejunum, and ileum
Function of bile?
Serves to emulsify fats
What lower part joins with the small intestine ?
Pylorus(lower narrow section of the stomach which joins the first part of the small intestine
Enzymes do what?
Speed up specific chemical reactions without themselves being changed or consumed during the reaction process.
Amylase is made where?
Amylase(enzymes that digest carbohydrates) made in pancreas .
Pepsin?
Gastric juice enzyme that partially digests proteins.
Role of trypsin
This enzyme is made in an inactive form in the pancreas and digests proteins.
End product of carbohydrate digestion is what?
Monosaccharides (simple sugars) .. Most abundant is glucose.
Protein digestion begins where?
The stomach
Fat digestion begins where?
The small intestines (duodenum)
Lipase?
Changes emulsified fats to fatty acids and glycerol in the small intestines