In the tear ducts, or the so-called " third eyelid " ( nictitating membrane ) or in the eyeball itself.
32.
Woodpeckers tighten their nictitating membrane a millisecond prior to their beak impacting the trunk of a tree to prevent shaking-induced retinal injury.
33.
In many species, any stimulus to the eyeball ( such as a puff of air ) will result in reflex nictitating membrane response.
34.
Field identification involves locating birds showing flaccidity in the legs, wings and neck, as well as the presence of protuberant nictitating membrane.
35.
Members of the order have two dorsal fins, which usually possess spines, no anal fin or nictitating membrane, and five gill slits.
36.
In cats, 0.01mg / kg of the new alkaloid caused broncho-constriction and contractions of the nictitating membrane of long duration.
37.
Sharks from this order have two dorsal fins-usually with spines-, no anal fin, and no nictitating membrane on the eyes.
38.
To protect their eyes, the falcons use their nictitating membranes ( third eyelids ) to spread tears and clear debris from their eyes while maintaining vision.
39.
Na�ve organisms initially produce a reflexive, unconditioned response ( UR ) ( e . g . blink or extension of nictitating membrane ) that follows US onset.
40.
The large, oval eyes have cat-like slit pupils, a rudimentary nictitating membrane ( protective third eyelid ), and a prominent ridge running underneath.
