Animal Physiology

acid action alimentary canal animal arrangement arteries auricle becomes blood blood-vessels body bones brain branches called canal capillaries carbonic cartilage cause cavity chest chief closed coat common composed connected consists contains continuous contraction convey cord crystalline lens Describe diaphragm differ digestion duct elastic enters fibres fluid front Give glands head heart illustrated inch intestine joints kidneys kind layer lens LESSON ligament liver lower lungs matter means membrane minute motion mouth move movements mucous membrane muscles muscular nerve nitrogenous notice organs outer oxygen passes portion position produced pulmonary removed resembles ribs secreted seen sensation separated showing side skin spinal stomach structure substance supplied surface surrounded thin tissue tongue trachea tube turn upper valves various veins ventricle vertebrę vessels viewed walls weight