Definition In lacrimal duct stenosis, the lacrimal duct is closed for various reasons, which hinders the drainage of tear fluid. The tear fluid is produced in the lacrimal gland, which is located at the top of the eye. From here, the tear fluid reaches the surface of the eye, where it protects the eye from … Lacrimal duct stenosis – What is it?
By the cremasteric reflex, physicians mean the polysynaptic external reflex of the cremasteric muscle that moves the testes upward in response to stimuli. The reflex is exhaustible and may therefore be absent due to age physiology. Abnormal reflex behavior of the cremaster muscle, on the other hand, may also indicate spinal cord lesions. What is … Cremasteric Reflex: Function, Tasks, Role & Diseases
In neurology, the Babinski reflex is a pathological foot limb reflex from the pyramidal tract group. This reflex group refers to damage to the motor neurons through which motor function is controlled in humans. Such damage can occur in the context of diseases such as multiple sclerosis (MS) and amyotrophic lateral sclerosis (ALS). What is … Babinski Reflex: Function, Tasks, Role & Diseases
In holocrine secretion, glandular cells themselves become a component of a secretion by perishing during secretion. Such a mechanism is present in the human organism in the secretion of sebum. Both overproduction and underproduction of sebum can be pathological. What is holocrine secretion? Holocrine secretion is found, for example, in human sebaceous glands. The secreting … Holocrine Secretion: Function, Role & Diseases
The lacrimal nerve represents a branch of the ophthalmic nerve and sensitively innervates the conjunctiva (tunica conjunctiva) and parts of the eyelid. It is connected to the facial nerve and the zygomatic nerve. The latter gives fibers to the lacrimal nerve via a communication branch, which influence the lacrimal gland. What is the lacrimal nerve? … Lacrimal Nerve: Structure, Function & Diseases
The fornix conjunctivae is a part of the human eye. It is the fold of the envelope. It is located in the depth of the eye socket. What is the fornix conjunctivae? The fornix conjunctivae is located in the human eye. It is the envelope fold in the eye and is located in the orbit. … Fornix Conjunctivae: Structure, Function & Diseases
Eyelids are folds of skin that lie above and below the eye and delimit the eye socket towards the front. They can be used to close the eye. Eyelids serve primarily to protect and keep the eye moist. What is the eyelid? An eyelid is a thin fold that borders the eye socket forward and … Eyelid: Structure, Function & Diseases
The eye muscles serve the motor function of the eyeballs, accommodation of the lenses, and adaptation of the pupils. The 6 external eye muscles are able to move the two eyeballs in unison and synchronously or to focus on a gaze target. The inner eye muscles are responsible for focusing on near or far vision … Eye Muscles: Structure, Function & Diseases
Introduction The eyelid, as the skin surrounding the eye, serves both to protect the eye with eyelashes and to moisturize the eye with glands located there. Pain in the eyelid is often due to inflammation. On the one hand, the sebaceous glands can be affected if they become clogged, but bacterial infections of the eyelid … Pain of the eyelid
Associated symptoms The blink is a reflex that occurs unnoticed and involuntarily. By means of the eyelid closure reflex, the tear fluid from the lacrimal gland is distributed throughout the entire eye, thus protecting the eye from dirt and dehydration. Pain when blinking often occurs during acute inflammation, which can make eyelid closure uncomfortable and … Associated symptoms | Pain of the eyelid
The neurologist refers to the Chaddock reflex as a pathological foot limb reflex of the Babinski group. Reflexes of this group are known as pyramidal tract signs and refer to damage to central motor neurons. The sensitivity of the Chaddock reflex is now controversial. What is the Chaddock reflex? The neurologist refers to the Chaddock … Chaddock Reflex: Function, Tasks, Role & Diseases
The superficial temporal artery is the last upper portion of the external carotid artery in humans. The superficial temporal artery supplies blood to the upper half of the head and extends from the ear to the temple. The superficial temporal artery is where the pulse is usually taken in the zygomatic region. What is the … Superficial Temporal Artery: Structure, Function & Diseases
