Frog morphology Flashcards
Classification of a Field Frog:
Phylum: Chordata
Subphylum: Vertebrata
Class: Amphibia
Order: Anura
Family: Ranidae
Genus: Rana
Field frog: Rana vittegera Bullfrog: Rana catesbeina
Two major parts of frog
Axial region
Appendicular region
composed of the head and the trunk
Axial region
composed of the appendages or the limbs.
Appendicular region
is a triangular protruding region of the head.
Snout
Is a large anterior opening of the head of the frog with teeth and tongue.
Mouth
The two eyes are found on the sides of the head. The eyes have upper eyelid, lower eyelid and the 3rd eyelid called
Nictitating membrane
are two small opening near the tip of the snout.
Nostrils or external nares
is a small round arc of thickened membrane behind each eye.
Tympanic membrane
is lightly colored spot at the median dorsal part of the head in front of the eyes.
Brow spot
is a marked elevation on the mid-dorsal surface of the trunk near the posterior end.
Hump
is a small opening at the dorsal end of the trunk, which serve for the exit of reproductive cells, excretory products and undigested food matter
Anus
There are……. on the anterior end of the trunk consisting of the upper arm, forearm, wrist, manus or hand with four digits or finger.
Two forelimbs
The…. on the posterior end of the trunk consist of thigh, shank or middle portion, ankles, with webbed toes, a sixth toe, the prehallux is felt on the inner side of the foot near the most proximal toe, the hallux.
Two Hindlimbs
The ….in the upper mouth help keep the prey from escaping.
maxillary and vomerine teeth
Is achieved by a combination of muscular movements, mucus secretion, ciliated lining, the mouth cavity and the lowering the eyes into their sockets that depresses the roof
of the mouth.
Swallowing
Back part of the mouth cavity
Pharynx
The stomach leads to the….l., where bile and pancreatic secretions act on food
Small intestine
Absorption of food takes place in.l.
Small instestine
The digestive process begins in the …
Mouth
A passage way of air and food
Pharynx
A flexible flab
Epiglottis
After being chewed and swallowed, the food enters the
Esophagus
It uses rhythmic, wave-like muscle movements
Peristalis
is a large, sack- like organ that churns the food and bathes it in a very strong acid (gastric acid).
Stomach
After being in the stomach, food enters the duodenum, the first part of the small intestine.
Small intestine
After passing through the small intestine, food passes into the large intestine.
Large intestine
Solid waste is then stored in the rectum until it is excreted via
Anus
is a large dark gland and is the largest gland in the body. The position of which is posterior and somewhat dorsal to the heart.
Liver
is a thin-walled greenish sac containing the bile
Gall bladder
is an irregular glandular mass in the mesentery, which is situated between the duodenum and the stomach
Pancreas
