Human Anatomy & Physiology Chapter: 15 Digestive System

Select all that apply What are the names of the three major pairs of salivary glands? parotid palatine submandibular sublingual salivary pharyngeal

1, 2, 4

The ______ is the innermost layer of the wall of the digestive tract. A) serosa B) mucosa C) submucosa

B)

What are the four layers of the alimentary canal, in order, starting with the outermost A) mucosa, muscularis, submucosa, serosa B) serosa, muscularis, submucosa, mucosa C) serosa, mucosa, submucosa, muscularis D) muscularis, serosa, mucosa, submucosa

B)

The ______ are highly mobile structures that surround the mouth opening. They contain skeletal muscles and sensory receptors useful in judging the temperature and texture of foods. uvula lips cheeks

B.

The ______ is a thick layer of connective tissue between the mucosa and the muscular layer in the wall of the digestive tract. serosa submucosa

B.

The layer in the wall of the alimentary canal that is rich in blood vessels and lymphatic vessels that carry away absorbed materials is the ___________.

Submucosa

The alimentary canal and accessory organs are part of the _______________ system.

digestive

_______________ digestion breaks larger pieces into smaller ones without altering their chemical composition and ______________digestion breaks food into simpler forms usable by the body.

mechanical digestion, chemical digestion

The layer of the alimentary canal responsible for absorption, and for secretion of digestive enzymes, is the ____________.

mucosa

The layer of the alimentary canal that provides movement of food through the tube is the ___________ layer.

muscularis

The ___________ in the mouth are responsible for mechanical digestion, breaking larger pieces of food into smaller pieces.

teeth

The physiological name for chewing is __________.

mastication

Select all that apply Indicate which of the following are functions of saliva. (select all that apply) Multiple select question. helps cleanse the mouth and teeth moistens food particles initiates chemical digestion of carbohydrates initiates chemical digestion of proteins dissolves molecules so they can be tasted aids in mechanical digestion

1, 2, 3, 5,

Select all that apply Which of the following parts of the pharynx provide a passageway for food (select all that apply) Oropharynx Nasopharynx Laryngopharynx

1, 3

Indicate which of the following are characteristics of the mucosa (select all that apply) 1) it carries on secretion and absorption 2)it is responsible for peristalsis of the digestive tract it secretes serous fluid to protect the outer surface of the alimentary canal it contains glands that secrete mucus and digestive enzymes

1, 4

Indicate which of the following are functions of the stomach. (select all that apply) It initiates protein digestion. It initiates digestion of carbohydrates. It carries out most absorption in the digestive tract. It receives food from the esophagus. It mixes the food with gastric juice.

1, 4, 5

Select all that apply Describe the alimentary canal. 1) Food does not pass through it 2) Passes through thoracic and abdominopelvic cavities 3) Liver and pancreas are part of the canal 4) 8 meter long tube

2, 4

Select all that apply What are the functions of tongue? Secrete saliva for digestion Breakdown food through mechanical digestion Move food toward the pharynx (throat) during swallowing Mix food with saliva during chewing

3, 4

Within the muscular layer of the alimentary canal, the outermost layer consists of ______ fibers. longitudinal circular

A.

The roof of the mouth consists of a bony anterior portion called the ______ and a muscular posterior portion called the _____. soft palate; hard palate hard palate; soft palate hard palate; uvula teeth; soft palate

B.

The ______ and the ______ do not digest food, but both function in swallowing. larynx; trachea trachea; esophagus pharynx; esophagus larynx; pharynx

C.

Breaking large pieces of food into smaller ones, such as in chewing, is called ____ digestion, whereas breaking the bonds between food using enzymes is ____ digestion. ] absorption; chemical chemical; absorption mechanical; absorption mechanical; chemical chemical; mechanical

D.

The visceral peritoneum of the alimentary canal refers to the submucosa muscularis mucosa serosa

D.

What is the function of teeth? Begin chemical digestion Move the food towards the throat for swallowing To protect the body against infections Begin mechanical digestion

D.

What structure has no digestive function, but conveys food to the stomach? Multiple choice question. Larynx Small intestine Gallbladder Esophagus

D.

Wavelike motions in the intestines that propel the contents forward is called __________.

peristalsis

The four layers of the of alimentary canal include the mucosa, submucosa, muscularis and the ____________.

serosa

The outer covering of the wall of the alimentary canal is also known as the __________.

serosa

The ________ is a muscular structure responsible for mixing food with saliva and moving the food toward the pharynx (throat) for swallowing.

tongue

What are the names of the major salivary glands? serosa, mucosa, submucosa parotid, submandibular, sublingual salivary and mucous pharyngeal, lingual, palatine

B.

What is a definition of peristalsis? A large contraction of the entire alimentary tract that occurs once a day Wavelike motion that propels contents along the tube Rhythmic contraction of the tube that allows for mixing of the contents

B.

What is the 8-meter-long tube that passes through the thoracic and abdominopelvic cavities of the body? Intestines Alimentary canal Liver Accessory organs

B.

The ______________, forming the lateral walls of the mouth, consist of outer layers of skin, pads of subcutaneous fat, muscles associated with expression and chewing, and inner linings of moist, stratified squamous epithelium.

cheeks

What is the main function of the serosa in the wall of the alimentary canal? To support blood vessels and lymphatic vessels that assist in absorption and nourishment of surrounding tissue To generate muscle contraction to produce movement of food in the alimentary canal To secrete a fluid to lubricate the outer surface of the alimentary canal To absorb nutrients

C.

What is the function of the lower esophageal sphincter? To prevent regurgitation from the stomach into the esophagus To control the amount of food leaving the stomach To control the amount of food entering the stomach To prevent food from entering the respiratory system

A.

_____________ , a fluid, functions to moisten food particles, begins digestion of carbohydrates, cleans the mouth and teeth, inhibits bacterial growth, dissolve molecules so they can stimulate the taste buds and bind particles together to aid in swallowing.

Saliva