Head And Neck Research Paper

The anatomy and physiology of the human body explains that muscles are attached to the skeleton. They work like hinges or levers to pull or move particular joints when a muscle contracts, pulling the joint in the direction it is designed to move. Parts of muscles move antagonistically, that is, when one contracts, its opposite member relaxes to allow movement. Muscles can become slack, making movement slower and more difficult.

to contract, which then allows body movements and functions? There are two types of muscles in

The muscles’ stretched starting position means that the individual sarcomeres of her muscles have less overlap

during these movements, the angles of those joints, as well as the muscles involved during the

Together, the two sides extend neck; alone, each rotates and laterally flexes neck to that side

Most dental hygiene programs require at least one to two human anatomy classes. A dental hygienist must know how the bone structure of a skull works, including the jaws and teeth structures. I will be taking my first human anatomy class this following semester, and I am quite excited to learn more about the human body. This is one of the many things that first attracted me to becoming a dental hygienist; the medical and scientific aspects of the job are fascinating to me. I am also excited to learn about different oral diseases that the human can experience. It will be my job to teach others about these diseases, such as gingivitis, and what we can do to prevent and treat such

Muscle tension. Tension can be seen in people’s hands, feet, shoulders, neck, face muscles, and in their breathing. this can communicate whether a person is relaxed or tense

Muscles in human body is like the motor which supports or assist the bones at the joints to move and work. When the muscle pulls it moves the bones at particular joints, which establish the joints to move about.

Shoulder flexion/extension; Elbow flexion and extension; Use of the lower and upper back. Muscles involved include the latissimus dorsi, rhomboids, trapezius, deltoids and the pectorals.

shape of our face is the shape of our skull, our lips retreat back from

The suprahyoid muscles include the digastric, mylohyoid, geniohyoid, and stylohyoid muscles (19-21). All suprahyoid muscles bring to elevate the hyoid bone, and alternatively when the hyoid bone is fixed, the suprahyoid muscles are responsible for mandibular depression and retrusion of the mandible during opening of the mouth (20). They also play a role in chewing, and swallowing (20-22). The digastric muscles are one of many muscles that elevate the hyoid bone. If the suprahyoid and infrahyoid muscles fix the hyoid bone, it will tend to depress the mandible, and when the mandible is stabilized, the muscles elevate the hyoid bone, which is a necessary function for swallowing (21,22). The mylohyoid can slightly elevate the hyoid, the tongue,

Structures of skulls and diverse types of teeth inform us about the lifestyle and the environment that the organisms live. Different structures of skulls are designed in the attempt of supporting each unique and specific function of the organisms include processing food. The teeth can show the organism’s lifestyle and its diet. There are four types of teeth that occur in mammal skulls; incisors, canines, premolars, and molars. Incisors are the four front teeth in both the upper and lower jaws, the middle two incisors are termed the central incisors. And two of the sides are called lateral incisors. The design of flat and broad surfaces with narrow edges are for biting and

The trigeminal and facial cranial nerves in the human body are both complicated and strange. The nerves may seem chaotic and unorganized at first glance; however, upon further investigation Shubin discovers that they are actually an organized jumble of nerves. What initially seemed like a mess, soon became a pattern revealing order and explanation. There are twelve cranial nerves, two being trigeminal and facial, that control numerous aspects of our bodies. For example, specific nerves may control chewing, speaking, head movement, eye movement, and more. It is normally easy to track these nerves and their jobs, but that is not the case for the trigeminal and facial cranial nerves. They have “very complex functions and take tortuous paths through the head to do their job,” says Shubin (84). The trigeminal nerve creates a network of nerves which allow our bodies to relay sensory information from our face back to our brain, as well as help us to feel sensations in the roots of our teeth and face. Like the trigeminal nerve, the facial cranial nerve controls facial muscles and relays information to and from the brain. In short, it’s what allows us to make sad, happy, and angry expressions. In conclusion, this tangle of nerves is essential to our everyday lives and while it may seem complicated at first, it has an organized

Proper positioning of the lag screw to engage the dense lingual cortex of the ramus of the mandible is difficult, operators engaging lingual cortex of the third molar area with insufficient thickness and density in order to avoid inferior alveolar nerve suffer from failure to achieve rigid fixation. Requiring the use of supplemental fixation device. or second operation for refixing due to instability. 2,6-8

Additionally, the jaw muscles: masseter, temporalis, medial pterygoid, and the lateral pterygoid are involved in mechanical digestion. The change of tooth size also influenced the jaw muscles’ length. The primary function of the jaw muscles is to aid the process of breaking down food into smaller particles to make food digestion more effortless. As the size of teeth decreased, the amount of