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Anatomy of the human heart. The heart is a muscular organ situated in the mediastinum. It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior ...
Emmetropia is the state of vision in which a faraway object at infinity is in sharp focus with the ciliary muscle in a relaxed state. That condition of the normal eye is achieved when the refractive power of the cornea and eye lens and the axial length of the eye balance out, which focuses rays exactly on the retina, resulting in perfectly sharp distance vision.
Gross anatomy is the study of anatomy at the visible or macroscopic level. The counterpart to gross anatomy is the field of histology, which studies microscopic anatomy. Gross anatomy of the human body or other animals seeks to understand the relationship between components of an organism in order to gain a greater appreciation of the roles of those components and their relationships in ...
Look up sic in Wiktionary, the free dictionary. Though occasionally misidentified as an abbreviated word, sic is a Latin adverb used in English as an adverb, and, derivatively, as a noun and a verb. [3] The adverb sic, meaning 'intentionally so written', first appeared in English c. 1856. [4] It is derived from the Latin adverb sīc, which ...
Optical correction using glasses or contact lenses is the most common treatment; other approaches include orthokeratology, and refractive surgery.: 21–26 Medications (mostly atropine) and vision therapy can be effective in addressing the various forms of pseudomyopia. Compensating for myopia using a corrective lens. Glasses and contacts
Roof prism. A roof pentaprism used in Single-lens reflex cameras; the lower right face is the roof ( dach ). A roof prism, also called a Dachkanten prism or Dach prism (from German: Dachkante, lit. "roof edge"), is a reflective prism containing a section where two faces meet at a 90° angle, resembling the roof of a building and thus the name.
The lunula is the white crescent-shaped area at the base of a nail. The lunula, or ( pl.: lunulae; from Latin 'little moon'), is the crescent-shaped whitish area of the bed of a fingernail or toenail . In humans, it appears by week 14 [1] of gestation, and has a primary structural role in defining the free edge of the distal nail plate (the ...
The old Bureau of Corrections Logo. The logo of the bureau represents the government agency's mandate, the rehabilitation of inmate. The logo focuses on the man in prison as the main concern of rehabilitation. It presents man behind bars, but who looks outwards with the hope of rejoining the free community.