Final Flashcards
Frog phylum
chordata
Frog subphylum
vertebrae
Frog class
amphibia
Why are frogs said to have “two lives”?
They are amphibians meaning that they spend their lives in both water and land
Dorsal means?
toward the back; upper/backside
Ventral means?
toward the belly; under side
Anterior means?
located towards front of the body
Posterior means?
back of the body; near the rear
Head means?
upper part of the body
Torso means?
trunk of the body
Frog lungs are poorly developed. How does this relate to their skin being thin and moist?
Frogs can breathe through their skin.
The thin membranous skin allows respiratory gases to diffuse directly down their gradients between the blood vessels and the surroundings. When the frog is out of the water, mucus glands in the skin keep the frog moist, which helps absorb dissolved oxygen from the air.
How does the tympanic membrane work?
It receives sound vibrations and transmits them to auditory ossicles.
List two ways forelimbs are different than hind limbs
hind limbs tend to be sturdier, stronger, and longer
hind limbs are more firmly attached to the spine
What organs are removed first in a frog dissection?
liver, intestines, kidneys
frogs exchange gases through the ____ and the ____
mouth, skin
the glottis leads to the frog’s _____ which connects the mouth to the _____
esophagus, stomach
Arteries carry blood ___ the heart. Veins carry blood ____ the heart
away from, towards
______ connect arteries to veins
capillaries
A frog’s heart has ___ chambers. Two atrium and ___ ventricle
3, 1
Urine and solid waste leaves the frog’s body through an opening called the ____
cloaca
Muscle tissue is usually grouped into large _____
bundles
A frog’s skeleton is made up of _______ regions
axial and appendicular
The axial region consists of ___ bones. The appendicular skeleton consists of ___ bones
47, 112
The frog’s tongue is anchored in the very front–opposite to the orientation and anchoring of humans. Why do you think this is so?
To retrieve food to the back of the mouth. It throws its sticky tongue out to catch insects, the tongue snaps back and throws the food down its throat.
Location and function of esophagus
near stomach, tube leads from mouth to stomach
Location and function of stomach
near pancreas, first site of chemical digestion, breaks down food
Location and function of pancreas
near stomach, male’s insulin
Location and function of cloaca
on top of left sewer, where urine, sperm, eggs exit
Location and function of lungs
middle of body, oxygen and carbon dioxide exchange
Location and function of heart
right of chest, pumps blood
Location and function of liver
near gallbladder, makes bile
Location and function of gallbladder
left posterior lobe, stores bile
Location and function of small intestine
near gallbladder, absorbs nutrients from food
Location and function of larger intestine
above cloaca, collects waste and absorbs water
