Home > Uncategorized > Human Anatomy: Digestion 2

Human Anatomy: Digestion 2

Overview
Today, we’ll cover part two of Ratfink’s digestion series. This lecture is mostly about the openings about the throat.

Details
The tongue has many functions: mastication, deglutition (swallowing), speaking, taste buds (chemoreceptors)

Sensory Neurons
sweet – sugars
sout – acids
salty – salts, NaCl
bitter – aspirin, KCl
umami(savory) – amino acids, MSF

The tongue is controlled by intrinsic or inside muscle and extrinsic or external muscles. The lingual frenulum is that line below the tongue. The root of the tongue is attached to the epigolatus.

Palantine tonsils on the side, lingual tonsin on the botom, paryngeal tonsil in the back. Inside the tonsils are macrophages and lymphocytes which make antibodies.

The paratid salivary glands are located just in front of the ears. Saliva softens the food we eat.

Amylase conversts amylose into maltose.

The palate allows a man to eat and breathe at the same time. Palatine ruga are ridges.

During their first year, a dental student will take a course in head and neck anatomy. The uvula closes the nose/mouth gap and the epigolotis closes the trachea/pharyx gap. We don’t want food to go out of our noses or into our trachea.

The posterior nares are the back opening of the nose into the nasal pharynx. The eustachian tubes hook up to the middle ear.

Review
Nucleophile: negative, has electrons available, less electronegative
Nucleophiles are electon donors, electrophiles are electron acceptors.
•S – Size Up the Situation
• U – Use All Your Senses, Undue Haste Makes Waste
• R – Remember Where You Are
• V – Vanquish Fear and Panic
• I – Improvise
• V – Value Living
• A – Act Like the Natives
• L – Live by Your Wits, But for Now, Learn Basic Skills
Human Decomposition: 1 week in air=2 weeks in water=8 weeks in soil

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