what are the functions of the orbicularis oris and orbicularis oculi?
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Structure and Function The orbicularis oculi muscle closes the eyelids and assists in pumping the tears from the eye into the nasolacrimal duct system.
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Orbicularis Oris Origin & Insertion Specifically, this muscle originates from the mid-line of the mandible and maxilla. ... From the mandible and maxilla, the orbicularis oris muscle then travels forwards and inserts right into the tissues of the upper and lower lips.
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In addition to their upper eyelid (1c) and lower eyelid (1d), birds possess a third, inner lid, the so-called nictitating membrane (1e), see photo on the right. This transparent membrane protects the eye and while it is in its rest position it is located in the front portion of the bird's eye.
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Function: controls heredity and cellular activities. Function: Cilia and flagella move small particles past fixed cells and are major form of locomotion in some cells. Structure: The endoplasmic reticulum, Golgi apparatus vacuoles, and vesticles.
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is that locule is (zoology) a little hollow; a loculus while carpel is one of the individual female reproductive organs in a flower a carpel is composed of an ovary, a style, and a stigma, although some flowers have carpels without a distinct style in origin, carpels are leaves (megasporophylls) that have evolved to ...
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In human physiology, the lacrimal glands are paired, almond-shaped exocrine glands, one for each eye, that secrete the aqueous layer of the tear film. They are situated in the upper lateral region of each orbit, in the lacrimal fossa of the orbit formed by the frontal bone.
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The amniotic membrane, the innermost layer of the placenta, plays a significant role in reconstructive surgery of the outer eye. The amniotic membrane possesses biological properties which promote wound healing in various disorders of the outer eye.
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['Cornea: This is the front layer of your eye. ... ', 'Pupil: The pupil is the black dot in the center of your eye that acts as a gateway for light. ... ', 'Iris: This part is typically referred to as your eye color. ... ', 'Lens: The lens is behind the iris and pupil.']
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There are flat bones in the skull (occipital, parietal, frontal, nasal, lacrimal, and vomer), the thoracic cage (sternum and ribs), and the pelvis (ilium, ischium, and pubis). The function of flat bones is to protect internal organs such as the brain, heart, and pelvic organs.
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Introduction to the anatomy and physiology of the eye The outer region consists of the cornea and the sclera. The cornea refracts and transmits the light to the lens and the retina and protects the eye against infection and structural damage to the deeper parts.
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['The functions of the axial skeleton are:', 'Create a framework to support and protect organs in.', 'Provide extensive surface area for the attachment of.', 'a. adjust the position of the head, neck and trunk.', 'b. perform respiratory movement.', 'c. ... ', 'The Skull.', 'Eight bones form the majority of the cranium or.']
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Carpel is unit of 'gynoecium' which is the female reproductive whorl of the flower while stamen is the unit of 'androecium' which is the male reproductive whorl of the flower. Carpel consist of three parts namely stigma, style and ovary while stamen consist of two parts namely anther and the filament.
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Light enters the eye through the pupil, and the iris regulates the amount of light by controlling the size of the pupil. This is known as the pupillary light reflex. The iris contains two groups of smooth muscles; a circular group called the sphincter pupillae, and a radial group called the dilator pupillae.
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The inside of the eye is divided into three sections called chambers. Anterior chamber: The anterior chamber is the front part of the eye between the cornea and the iris. The iris controls the amount of light that enters the eye by opening and closing the pupil. The iris uses muscles to change the size of the pupil.
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['The Functions of a Microscope.', 'Eyepiece Lens: the lens at the top that you look through, usually 10x or 15x power.', 'Tube: Connects the eyepiece to the objective lenses.', 'Arm: Supports the tube and connects it to the base.', 'Base: The bottom of the microscope, used for support.']
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The colored part of the eye which helps regulate the amount of light entering the eye. When there is bright light, the iris closes the pupil to let in less light. And when there is low light, the iris opens up the pupil to let in more light. Focuses light rays onto the retina.
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The nervous tunic, also known as the tunica nervosa oculi, is the inner sensory layer which includes the retina. Contributing to vision, the retina contains the photosensitive rod and cone cells and associated neurons. To maximise vision and light absorption, the retina is a relatively smooth (but curved) layer.