Solutions
Save Groups
Terms in this set (222)
What three process does food • Digestion
undergo in the body?
• Absorption
• Metabolism
What is ingestion? The first activity of the digestive system is to take in
food
What is mechanical digestion? The large pieces of food that are ingested have to be
broken into smaller particles that can be acted on by
various enzymes.
What is chemical digestion? The complex molecules of carbohydrates, proteins,
and fats are transformed by chemical digestion into
smaller molecules that can be absorbed and used by
the cells.
What is deglutition? (Swallowing) After ingestion and mastication, the food particles
move from the mouth into the pharynx and then into
the esophagus
What is peristalsis? The movements that propel the food particles
through the digestive tract
What is absorption? The simple molecules that are produced from
chemical digestion pass through the lining of the
small intestine into the blood.
,What is defecation? The removal of indigestible wastes through the anus,
in the form of feces
What is the function of the lips and The lips and cheeks help to hold food in the mouth
cheeks when eating? and keep it in place for chewing. They are also used
in the formation of words for speech.
What are the main components of the are the buccinator muscle and other muscles of facial
cheek? expression.
On the outside, the muscles are covered by skin and
subcutaneous tissue.
What is the palate? is the roof of the oral cavity. It separates the oral
cavity from the nasal cavity
What is the lingual frenulum? The anterior portion is relatively free but is
connected to the floor of the mouth, in the midline,
by a membranous fold of tissue
What are papillae and what do they The dorsal surface of the tongue is covered by tiny
do? projections
they provide friction for manipulating food in the
mouth, and they also contain the taste buds
What are the two sets of teeth that the primary or deciduous teeth
develop in the mouth?
Primary teeth contain how many teeth contain 10 teeth in each jaw for a total of 20 teeth.
total?
Secondary teeth contain how many This set contains 16 teeth in each jaw for a total of 32
teeth total? teeth.
What is the purpose of the incisors? incisors are chisel shaped and have sharp edges for
biting food.
, What is the purpose of the cuspids? (canines) are cone shaped and have points for
grasping and tearing food.
What is the purpose of the bicuspids? (premolars) and molars have flat surfaces with
rounded projections for crushing and grinding.
What is contained in the upper region It contains the pharyngeal tonsils, also known as the
of the pharynx? adenoids.
What is contained in the middle The nasopharynx functions as a passageway for air
region of the pharynx? What does it but has no function in the digestive system.
open into?
This is the region food enters when it is swallowed.
The opening from the oral cavity into the oropharynx
is called the fauces.
What is contained in the lower region Masses of lymphoid tissue, the palatine tonsils, are
of the pharynx? What does it open near the fauces.
into?
is the laryngopharynx. The laryngopharynx opens
into both the esophagus and the larynx.
What is the function of the it serves as a passageway for food between the
esophagus? pharynx and stomach.
What is the purpose of the pyloric acts as a valve between the stomach and small
sphincter? intestine.
What type of acid is found in the hydrochloric acid
stomach?
How is chyme created? The churning action of the muscles in the stomach
wall breaks the food particles of the bolus that was
swallowed into smaller sizes and mixes them with the
gastric juice.
How many hours does it take for the within 4 hours after
stomach to empty a meal?