Exam 4: Ch. 24 Pt. 1 Flashcards
Digestive tract is aka
- Alimentary tract
2. GI Tract
List accessory organs (4)
- Liver
- Gallbladder
- Pancreas
- Glands
Mouth is aka
Oral cavity
Accessory organs of small intestines (3)
- Liver
- Gallbladder
- Pancreas
List general parts of large intestine (4)
- Cecum
- Colon
- Rectum
- Anal canal
7 regions of digestive tract
- Mouth/oral cavity
- Pharynx
- Esophagus
- Stomach
- Small intestine
- Large intestine
- Anus
8 functions of digestive sys
- Ingestion
- Mastication
- Propulsion
- Mass movements in large intestine
- Secretion
- Digestion
- Absorption
- Elimination
Mastication: bones involved
Mandible
Mastication: joint
TMJ
Mastication: muscles (4)
- Masseter
- Buccinator
- Temporalis
- Tongue
Mastication: classification of joint
Ellipsoid
Mastication: structure of joint of teeth
Gomphoses
Propulsion: where does propulsion take place?
From esophagus to stomach to intestines
2 parts propulsion
- Deglutition/swallowing
2. Peristalsis
Mastication: bones involved
Mandible
Mastication: joint involved
TMJ
Mastication: muscles involved
- Masseter
- Buccinator
- Temporalis
- Tongue
Mastication: classification of joint TMJ
Ellipsoid
Mastication: structure of joint
Gomphosis
Propulsion: deglutition: movement of tongue
Tongue goes up and slides back
Propulsion: deglutition: voluntary or involuntary?
Voluntary
Propulsion: peristalsis: voluntary or involuntary
Involuntary
Propulsion: peristalsis: function
Waves of contractions so food will move down
F. of mass movements in large intestine?
reabsorption of water
D. of mixing in the intestines
segmental contractions in intestines that split food in opposite directions from stomach to anus
3 f. of secretion
- lubricate
- liquefy
- digest
secretion: amylase enzyme: which biomolecule is being digested?
sugar/carbohydrates
4 types of secretion
- amylase enzyme
- mucus
- water
- bile
2 organs where secretion is produced
- stomach
2. intestines
F. of bile
emulsify fats (NO digestion)
2 places where there is mechanical digestion
- mouth/oral cavity
2. stomach
4 layers of digestive tract from innermost to outermost
- mucosa
- submucosa
- muscularis
- serosa
Digestive tract: mucosa: has blood vessels?
avascular
digestive tract: what type of tissue is lamina propia?
loose connective tissue
digestive tract: 2 F. of muscularis
- supports the mucosa
2. mixing
digestive tract: 2 layers of muscularis
- circular
2. longitudinal
digestive tract: what is special about submucosa? (3)
- has nerves
- has blood vessels
- has small glands
regulation of digestive system: LOCAL nervous regulation: 3 types of systems
- enteric
- sympathetic
- parasympathetic
regulation of digestive system: LOCAL nervous regulation: 3 types of neurons
- sensory
- motor
- interneurons
regulation of digestive system: LOCAL nervous regulation: 2 functions
- coordinates peristalsis
2. regulates local reflexes
regulation of digestive system: GENERAL nervous regulation: coordination with…
coordination with CNS
regulation of digestive system: GENERAL nervous regulation: Initiates reflexes of stomach…
sight, smell, taste of food
regulation of digestive system: GENERAL nervous regulation: 2 nervous systems involved
- parasympathetic
2. sympathetic
regulation of digestive system: chemical regulation: 2 functions
- production of hormones
2. production of paracrine chemicals
regulation of digestive system: chemical regulation: 2 hormones produced
- gastrin
2. secretin
regulation of digestive system: chemical regulation: 4 paracrine chemicals produced
- histamine
- gastrin
- secretin
- acetylcholine
regulation of digestive system: chemical regulation: purpose of paracrine chemicals
high difference of pH is dangerous, so hormones slow down the process
3 types of peritoneum
- visceral
- parietal
- retroperitoneal
F. of visceral peritoneum
cover organs
2 organs not covered by visceral peritoneum
- pancreas
2. duodenum of small intestine
F. of parietal peritoneum
cover interior surface of body wall
retroperitoneal: D.
certain organs covered by peritoneum only on one surface and are considered behind the peritoneum
5 organs covered in retroperitoneal
- kidneys
- pancreas
- duodenum of small intestine
- rectum
- urinary bladder
F. of ligaments in digestive system
keep organs in place
ligaments: what does the lesser omentum connect?
liver to stomach
ligaments: what does the greater omentum connect?
transverse colon to stomach
D. of mesenteries in tissue
CT that has blood vessels and nerves
list 2 ligaments assoc. with liver
- coronary
2. falciform
location of coronary ligament
between liver and diaphragm
location of falciform ligament
between liver and anterior abdominal wall
7 structures of oral cavity
- teeth
- tongue
- uvula
- gingiva
- lips
- hard palate
- soft palate
5 muscles for the lips
- orbicularis oris
- labial frenula
- levator labis
- platysma
- risorius
lips: F. of labial frenula
keep lips closely attached to teeth
lips: F. of platysma
frowning
lips: F. of risorius
smiling
muscle of cheek
buccinator
F. of palatine tonsils
protection against bacteria
2 types of muscle of tongue
- intrinsic
2. extrinsic
tongue: F. of intrinsic muscle
change shape
tongue: 2 F. of extrinsic muscle
protrude or retract tongue; move side to side
tongue: D. of lingual frenulum
structure that attaches tongue inferiorly to floor of oral cavity
2 sets of teeth and their period of life
- primary, deciduous, milk: childhood
2. permanent/secondary: adult
why do humans have 2 sets of teeth?
difference in diets
4 types of teeth
- incisors
- canines
- premolars
- molars
teeth: what is the anatomical crown
part of teeth we use
teeth: what is the cusp
part we clean
teeth: where is the neck
between anatomical crown and root
teeth: where is the root
inside bone
teeth: what 3 structures does the root have?
- periodontal ligaments
- nerves
- blood vessels
teeth: how does cavity form?
bacteria chews up enamel on cusp and makes contact with live cells underneath
Mastication: 5 movements
- elevation
- depression
- protraction
- retraction
- excursion
3 pairs of multicellular SALIVARY glands
- parotid
- submandibular
- sublingual
salivary glands: S. of parotid multicellular glands
- serous
2. largest glands
salivary glands: S. of submandibular multicellular glands
mixed serous and mucus
salivary glands: S. of sublingual
mostly mucus; smallest
salivary glands: S. of lingual glands
small, coiled tubular glands on surface of tongue
saliva: which 2 biomolecules does saliva start digestion for?
- lipids
2. carbohydrates
saliva: what does amylase break down?
carbohydrates/sugars