AMPHIBIAN INFOMERCIAL

BODY ADAPTATIONS

• Large shoulder and hips bones to support weight
• Interlocking vertabrae to keep backbone from sagging

SKIN ADAPTATIONS

• Many amphibians use their skin to breathe
• They have thin, wet skin with many glands
• Thier skin has two layers: epidermis and dermis

SENSORY ADAPTATIONS

• Amphibians contain eyelids and lacrimal glands
• Their eyes have cornea as primary light refracting surface
• Sight modifies itself for life on land
• They have a tympanic membrane and stapes, to hear out of water
• Amphibians can detect chemicals through their skin

BREATHING ADAPTATIONS

• Depending on the species and stage they either breathe through their skin, gills, or lungs
• They have paired nostrils to take in air
• When they breathe through lungs they use a process called buccal pumping

AMPHIBIAN CIRCULATORY CIRCUITS

• Pulmonary circuits takes blood between heart and lungs,skin, or gills
• Systematic circuit takes blood to organs in the body
• Spleen contains their blood
• They have a 3 chambered heart with: 2 atria and 1 ventricle

EXCRETORY ADAPTAIONS

• Amphibians that live on land release their waste as urea
• Amphibians that live in water release their waste as ammonia
• In amphibians that live on land they can store their waste in their bladder
• Mesonephrenic kidneys are used to filter blood

AMPHIBIAN HABITAT DESCRIPTIONS

• They must have easy access to stay moist
• Must find a place to live that is non-polluted
• During the winter they must find a dry place to bury themselves in
• They need a body of water to lay their eggs in

AMPHIBIAN HABITAT REASONS

• They are likely the first organisms to leave or die in a polluted area
• Their skin absorbs toxins and water easily
• They are first affected by pollution

AMPHIBIAN DIGESTIVE ORGANS

• Pharynx- recieves food from mouth
• Esophagus- passes food from phayrnx to stomach
• Stomach- digest food
• Small intestine- absorbs 90% of nutrients
• Large intestine- used by the body for metabolism

CONTINUED

• Pancreas- produced digestive juices
• Liver- digests fat
• Gallbladder- holds bile
• Cloaca- where the wastes leave

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