Frog Anatomy and Physiology Overview

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Questions and Answers

What is the function of the external nares?

Located inside the mouth

Outside of head; nostrils (correct)

Part of the digestive system

Organ for hearing

What is the nictitating membrane?

Third lid

Where are vomerine teeth located, and what is their function?

Roof of mouth; hold prey

What does the classification of a frog fall under?

Amphibian Signup and view all the answers

What does the pharynx receive?

Both air and food Signup and view all the answers

What organ synthesizes bile?

Liver Signup and view all the answers

What does the gall bladder do?

Stores bile Signup and view all the answers

What do eustachian tubes connect?

Pharynx to ear Signup and view all the answers

What is bile's function?

Emulsifies fats Signup and view all the answers

What is the esophagus?

Tube into which food is swallowed Signup and view all the answers

What are kidneys classified as?

Excretory organs Signup and view all the answers

What is the pancreas responsible for?

Digestive accessory organ; feather-like Signup and view all the answers

What is the function of the larynx?

Voice box Signup and view all the answers

What does the cloaca represent?

Common exit chamber Signup and view all the answers

How many chambers does the frog's heart have?

3 chamber pump Signup and view all the answers

What are lungs responsible for?

Hollow sacs; exchange gases Signup and view all the answers

What type of blood flow do frogs have?

Closed circulatory system Signup and view all the answers

What defines a vertebrate?

Skeletal system Signup and view all the answers

Where does absorption of nutrients occur in frogs?

Small intestine Signup and view all the answers

What carries solid waste?

Large intestine Signup and view all the answers

What designates a male frog?

Testis Signup and view all the answers

What is peristalsis?

Rhythmic contraction Signup and view all the answers

What is the function of fat bodies?

Storage of nutrients occurs here Signup and view all the answers

What designates a female frog?

Oviducts Signup and view all the answers

What is the stomach's role in digestion?

First major site (besides mouth) of chemical digestion Signup and view all the answers

What does the spleen do?

Breaks down red blood cells Signup and view all the answers

What is chyme?

Semi-liquid mass of partially digested food Signup and view all the answers

What does the urinary bladder do?

Collects and stores urine Signup and view all the answers

What is the ureter's function?

Tube that takes urine to bladder Signup and view all the answers

What is the ovary's role in reproduction?

Produces eggs (female sex cells) Signup and view all the answers

What do sperm ducts do?

Takes sperm away from testes Signup and view all the answers

What is the function of the tongue in frogs?

Used to capture food, attaches to front of mouth Signup and view all the answers

What is the tympanic membrane?

Membrane that functions as an eardrum Signup and view all the answers

What is the purpose of the glottis?

Opening in mouth used as an airway Signup and view all the answers

What does the ventricle represent in the frog's heart?

The lower (single) chamber of the frog's heart Signup and view all the answers

What are the left and right atriums?

Top sections of the heart Signup and view all the answers

Where are maxillary teeth located?

Teeth located along the upper jaw Signup and view all the answers

What does tympani refer to?

Eardrums Signup and view all the answers

What are internal nares?

Openings to the nostrils Signup and view all the answers

What is the function of the nictitating membrane and why?

A clear eyelid that protects the eye; helps frog survive on land and in water Signup and view all the answers

Why doesn't a frog chew food, and what does its teeth suggest about its use?

Frogs grip larger prey, maxillary teeth stab and secure prey Signup and view all the answers

Trace the path of food through the digestive tract.

Food is caught by the tongue, goes to mouth, crushed by teeth, swallowed by pharynx, esophagus to stomach, nutrients absorbed in small intestine, waste in large intestine to cloaca. Signup and view all the answers

Trace the path of blood through the circulatory system, starting at the right atrium.

Deoxygenated blood enters the right atrium. Signup and view all the answers

Study Notes

Frog Anatomy Overview

External nares are nostrils located on the outside of the frog's head.
The nicitating membrane acts as a third eyelid, providing protection to the eyes.
Vomerine teeth are found on the roof of the mouth and help to hold prey.
Frogs belong to the classification of amphibians.

Digestive System Components

The pharynx serves as a passage for both air and food.
The liver synthesizes bile, crucial for digestion.
The gall bladder stores bile underneath the liver.
Chyme is a semi-liquid mass of partially digested food found in the digestive tract.
The esophagus is the tube through which food is swallowed.
The stomach is the first major site for chemical digestion.
The small intestine is where nutrient absorption occurs.
The large intestine is responsible for carrying solid waste to the cloaca.
Peristalsis refers to the rhythmic contraction that moves food through the digestive tract.

Excretory and Urinary Systems

Kidneys function as excretory organs, filtering waste.
The urinary bladder collects and stores urine.
Ureters are tubes that transport urine from the kidneys to the bladder.

Reproductive System

Testes designate male frogs, while ovaries produce eggs, the female sex cells.
Oviducts are the tubes responsible for carrying eggs in female frogs.
Sperm ducts transport sperm away from the testes.

Circulatory and Respiratory Systems

The heart has three chambers: a single ventricle and two atriums (left and right).
The frog's circulatory system is closed, ensuring efficient blood flow.
Lungs serve as hollow sacs for gas exchange, aiding in respiration.

Other Notable Features

The cloaca is a common exit chamber for excretory and reproductive systems.
The tympanic membrane, located on the side of the head, functions as an eardrum.
The glottis is an opening in the mouth used as an airway for breathing.
Maxillary teeth are sharp teeth along the upper jaw, assisting in securing and crushing prey.
Fat bodies serve as storage locations for nutrients within the frog's body.
Eustachian tubes connect the pharynx to the ear, playing a role in balance and hearing.

Functional Insights

The nictitating membrane helps frogs to protect and keep their eyes moist both in water and on land.
The positioning of a frog's teeth suggests that they are adapted to grip and secure larger prey items.
Ingestion process: Food is captured with the tongue, crushed by teeth, swallowed through the pharynx, and continues through the digestive tract to waste excretion.

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Description

Explore the fascinating anatomy and physiology of frogs in this quiz, which covers the external features, digestive system components, and excretory systems. Learn about the unique characteristics that make amphibians, like frogs, distinct in the animal kingdom.