Palpebral Part
Palpebral Part - Related Videos
02:54
Performing Injection into Palpebral Portion of the Superior Lacrimal Gland: A Technique for Inducing Dry Eye Disease in Rabbit Model
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2025
In this video, we show a procedure to induce aqueous-deficient dry eye disease in a rabbit model by injecting the palpebral portion of the superior lacrimal gland with Concanavalin A. This model is useful for pharmacokinetic and biodistribution assays of drugs for treating dry eye disease.
04:06
Superior Lacrimal Gland Removal: A Surgical Technique to Remove the Palpebral and Orbital Parts of Superior Lacrimal Gland from Rabbit Model
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2025
This video describes the surgical procedure to remove the two parts: palpebral and orbital of the superior lacrimal gland from a rabbit to create a dry eye disease model. This rabbit model is suitable for studies of ocular surface homeostasis, pathophysiology and ocular therapeutics.
01:31
Anesthesia and Monitoring in a Pig Model
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2026
All animal procedures described here must be conducted in accordance with institutional animal ethics guidelines and approved by IACUC. All procedures must follow the principles of the 3Rs—Replacement, Reduction, and Refinement—and must be performed by trained personnel. Pigs are commonly used in biomedical and surgical research because of their anatomical and physiological similarities to humans. During procedures, anesthesia prevents pain, reduces stress, limits movement, and supports animal...
14:01
Anesthesia Induction and Maintenance
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2016
Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN The Guide for the Care and Use of Laboratory Animals ("The Guide") states that pain assessment and alleviation are integral components of the veterinary care of laboratory animals. The definition of anesthesia is the loss of feeling or sensation. It is a dynamic event involving changes in anesthetic depth with respect to an animal's metabolism, surgical stimulation, or variations in the...
03:32
Exposing Brachial Plexus: A Surgical Technique to Visualize Brachial Plexus in Neonatal Piglet
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2025
This video describes an in vivo surgical procedure to expose the brachial plexus, a neural network that supplies cutaneous and muscular interventions to the upper limb. This surgery helps locate the plexus and eventually assess the extent of nerve injury involving the upper limb.
FAQs
Their contraction produces the gentle eyelid movement characteristic of blinking. Because these fibers lie within the eyelids, their action helps bring the eyelid surfaces together without requiring a large facial movement. This localized activity supports regular tear-film redistribution over the cornea and contributes to consistent protection during repeated blinks.
Blinking does more than close the eye briefly. Movement generated by the palpebral part helps spread the tear film across the cornea, while eyelid closure limits contact with debris and reduces exposure to excessive light. These linked effects explain why this small eyelid-associated muscle region contributes to surface maintenance as well as mechanical protection.
The palpebral part illustrates how a facial muscle can be arranged in thin fibers within a specialized structure rather than acting only as a broad surface muscle. Its position in the eyelids connects local muscle anatomy with coordinated facial movement, making it useful for studying how regional organization supports a specific biological action.
Assessment of this region is relevant because facial nerve dysfunction may be accompanied by weak or asymmetric eyelid closure. Observing the symmetry and strength of closure can therefore contribute to evaluating facial movement. The finding is especially informative when interpreted alongside the anatomy of the orbicularis oculi and its eyelid-associated fibers.
Teaching should connect location, fiber arrangement, and function rather than treating the structure as an isolated label. Learners can relate its thin fibers within the eyelids to gentle closure, tear-film distribution, and ocular protection. This approach also reinforces broader lessons about facial muscle organization and coordinated movement around the eye.
Weak or asymmetric closure raises a functional concern because the normal coordination between eyelid movement and ocular protection may be disturbed. The tear film may not be distributed evenly, and exposure to debris or excessive light may not be limited in the usual way. These observations help connect anatomical findings with facial movement assessment.