34 Questions
What type of teeth are found in opisthoglyphous snakes?
Fangs located at the back of the mouth
What is the main component of vertebrate tooth enamel?
Inorganic matter
Which type of vertebrate teeth are typically used for securing food and grooming?
Incisors
Which type of tooth attachment is found in most fishes and some lizards?
Acrodont
Which vertebrate group may completely lack teeth?
Amphibians
What is the primary function of tooth wear patterns in vertebrates?
Determining diet
What is the term used to describe teeth that are continuously replaced throughout an organism's life?
Polyphyodont
Which type of tooth morphology is characterized by teeth of different shapes along the jaw?
Heterodont
What type of tooth morphology is characterized by high, tall crowns?
Hypsodont
Which part of the pharynx includes the glottis, openings of the auditory tubes, and the entrance to the esophagus?
Laryngopharynx
Which layer of the gut wall contains the smooth muscle layer?
Muscularis
What is the term used to describe teeth with crescent-shaped surfaces?
Selenodont
What is the primary function of the digestive system?
To break down and absorb nutrients from food
Which of the following is NOT a component of the digestive tract?
Liver
Which of the following is true about the tongue in mammals?
The tongue is specialized for suckling and mastication
What is the main function of the salivary glands in mammals?
To produce enzymes for digestion
Which of the following is true about the oral cavity in vertebrates?
Amphibians have a primary tongue with glandular fields and lateral lingual swellings
What is the embryonic origin of the digestive tract?
The foregut, midgut, and hindgut
Which part of the stomach secretes mucus to help neutralize acid in the stomach?
Pylorus
What is the function of the gizzard in birds and crocodiles?
Mechanical breakdown of food
Which region of the stomach is responsible for enzymatic breakdown of food in specialized herbivorous mammals?
Rumen
What is the main function of the small intestine in vertebrates?
Digest lipids
In which part of the intestine does the initial digestion of ptyalin, pepsin, and cellulase take place in vertebrates?
Duodenum
What is the function of the cloaca in many vertebrates?
Storage of wastes
Which vertebrate group lacks a cloaca?
Mammals
What is the primary function of the liver in vertebrates?
Metabolism
What is the main function of the pyloric caeca in most bony fishes?
Increasing passage time
What is the digestive function of the abomasum in ruminants?
Digestion of plants
What is the function of the papillary process?
It attaches the liver to the stomach's lesser curvature.
Which of the following ligaments attaches the liver to the ventral abdomen?
Falciform ligament
What is the role of the lesser omentum?
It extends from the liver to the stomach and duodenum.
Which of the following animals lack a gallbladder?
Some rodents like rats and mice
What is the primary function of the exocrine pancreas?
Discharging enzymes into the proximal gut
How many pancreatic ducts do cats and humans share?
Two pancreatic ducts
Learn about the functions of the digestive system including taking in food, breaking up food, absorbing nutrients, and processing solid waste. Explore morphological variations based on food type, activity level, metabolism, and body size. Understand the embryonic origins of the foregut, midgut, and hindgut.
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