what is the function of the bulbocavernosus muscle?
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Function. In males, the function of bulbospongiosus is to aid in emptying the penile urethra during urination and ejaculation. Together with the ischiocavernosus muscle, it compresses the bulb of penis and the deep dorsal vein of penis.
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Function. The diaphragm is one of the main muscles of respiration. When the muscle fibers contract, the diaphragm is flattened. This increases the volume of the thoracic cavity vertically, which decreases intrapulmonary pressure, and air enters the lungs.
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Function. As the risorius contracts in an outward and upward motion, the muscle pulls the angle of the mouth laterally. Thereby, it aids in producing facial expressions, either solely or in conjunction with other facial muscles; such as smiling, smirking, grinning, frowning and others.
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The discs throughout the spine have three primary functions: They act as a shock absorbers in the spine, positioned between each bony vertebra. They act as tough ligaments that hold the vertebrae of the spine together. They are cartilaginous joints that allow for slight mobility in the spine.
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Orbicularis oris. Located in the face, the orbicularis oris muscle controls movements of the mouth and lips. Specifically, it encircles the mouth, originating in the maxilla (upper jaw and palate) and mandible (lower jaw) bones. The muscle inserts directly into the lips.
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The multifidus muscle is an important stabilizer of the lumbar spine. It functions together with transversus abdominis and pelvic floor muscles for spine stability.
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Actions. Quadratus Lumborum fixes the 12th rib to stabilize diaphragm attachments during inspiration. Lateral flexes the vertebral column. Extends lumbar vertebrae.
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Biceps brachii muscle. The biceps brachii muscle is one of the chief muscles of the arm. The origin at the scapula and the insertion into the radius of the biceps brachii means it can act on both the shoulder joint and the elbow joint, which is why this muscle participates in a few movements of the arm.
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Function. The main action of ciliary muscle is changing the shape of the lens which occurs during the accommodation reflex. In addition, when contracting, the longitudinal fibers of ciliary muscle widen the iridocorneal space and canal of Schlemm which facilitates the draining of eye fluid.
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The temporalis muscle runs superficially, from the temporal bone to the coronoid process of mandible. The main function of this muscle is to produce the movements of the mandible at the temporomandibular joint and thus facilitate the act of mastication.
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Cremaster muscle. Each cremaster muscle surrounds one of the testicles and its spermatic cord. The muscle helps to move the testicle toward and away from the body to maintain the ideal temperature for sperm production. This is why the scrotum hangs lower in warm conditions and closer to the body in cold weather.
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Cranial nerve XI innervates the motor function of the trapezius. The function of the trapezius is to stabilize and move the scapula. The upper fibers can elevate and upwardly rotate the scapula and extend the neck.
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Neuromuscular junctions, also called motor end plates, are specialised chemical synapses formed at the sites where the terminal branches of the axon of a motor neuron contact a target muscle cell. ... The axon end knob represents the presynaptic part of the neuromuscular junction.
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Terms in this set (11) So it flexes the leg and extends the foot. are used in the breathing process of frogs. Their function is similar The the function of rectus abdominis, which is to compress the lungs and force the air out. is a thin strap-shaped muscle that covers the posterior edge of the thigh.
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Shape: The deltoid (triangular), trapezius (trapezoid), serratus (saw‐toothed), and rhomboideus major (rhomboid) muscles have names that describe their shapes.
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The pectoral girdle stabilizes the upper limbs on the thorax and allows a range of mobility at the shoulder. Malformations impair these functions and distort the appearance of the upper chest and back. The pelvic girdle transfers upper body weight to the lower limbs by articulating with the spine.
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Function. As a part of the interposed nucleus, the emboliform participates in the spinocerebellum, a system that regulates the precision of limb movements.