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The word rabbit derives from the Middle English rabet ("young of the coney"), a borrowing from the Walloon robète, which was a diminutive of the French or Middle Dutch robbe ("rabbit"), a term of unknown origin. [1] The term coney is a term for an adult rabbit used until the 18th century; rabbit once referred only to the young animals. [2]
Neutering is possible for both female and male rabbits; however, spaying females can pose significant risks. This is because spaying female rabbits requires a far bigger surgery with a higher mortality rate (during or in relation to the procedure) compared to males, [2] as their lower abdomen needs to be opened up in order to remove ovaries and uterus.
Sliding filament model of muscle contraction. Cardiac sarcomere structure featuring myosin. Myosin II (also known as conventional myosin) is the myosin type responsible for producing muscle contraction in muscle cells in most animal cell types. It is also found in non-muscle cells in contractile bundles called stress fibers. [18]
The sliding filament theory explains the mechanism of muscle contraction based on muscle proteins that slide past each other to generate movement. [1] According to the sliding filament theory, the myosin ( thick filaments ) of muscle fibers slide past the actin ( thin filaments ) during muscle contraction, while the two groups of filaments ...
The use of animals, including rabbits, in scientific experiments has been subject to increased scrutiny in developed countries. Increasing regulation has raised the cost of producing animals for this purpose, and made other experimental options more attractive. Other researchers have abandoned investigations which required animal models. [17]
Proteins are the basis of many animal body structures (e.g. muscles, skin, and hair). They also form the enzymes which control chemical reactions throughout the body. Each molecule is composed of amino acids which are characterized by the inclusion of nitrogen and sometimes sulfur. The body requires amino acids to produce new proteins (protein ...
Donald Trump mocked Canadian Prime Minister Justin Trudeau after his top minister’s surprise resignation following a clash on how to handle the president-elect’s looming tariffs.
The muscular system is an organ system consisting of skeletal, smooth, and cardiac muscle. It permits movement of the body, maintains posture, and circulates blood throughout the body. [1] The muscular systems in vertebrates are controlled through the nervous system although some muscles (such as the cardiac muscle) can be