Head And Neck Pt. 1

The mastoid process is a bony prominence located behind the ear. The sternocleidomastoid muscle is attached to the mastoid process. This muscle originates from the sternum and clavicle and inserts into the mastoid process. It plays a key role in rotating and flexing the head and neck.

Slide 60. If its out of the ear it would most likely be posterior.

The main motor portion of the facial nerve exits the cranium through the stylomastoid foramen. This is true because the stylomastoid foramen is a small opening located in the skull, specifically in the temporal bone. It serves as the pathway for the facial nerve, which controls the muscles of facial expression. Exiting through this foramen allows the facial nerve to innervate the muscles of the face and contribute to facial movements.

Sagittal separates the two parietal bones. Coronal separates the frontal bone from the two parietal. The Nasion is the point at which the frontal and nasal bones meet.

The occipitofrontalis muscle is a broad muscle that covers the top of the skull and forehead. It is responsible for raising the eyebrows, wrinkling the forehead, and retracting the scalp. The aponeurosis layer of the scalp is a strong, fibrous sheet of connective tissue that covers the skull. The occipitofrontalis muscle has attachment sites in this layer, allowing it to move and manipulate the scalp.

The facial artery is the correct answer because it is the main blood supply to the face. It arises from the external carotid artery and branches out to supply blood to various structures in the face, including the muscles, skin, and other tissues. The maxillary artery supplies blood to the deep structures of the face, while the lingual artery supplies blood to the tongue. The superficial temporal artery supplies blood to the scalp and temporal region. However, in terms of blood supply to the face as a whole, the facial artery is the primary source.

Diploë is the middle spongy layer

They are branches of the internal carotid artery

This is one of the main drainage veins of the face (along with the facial vein and superficial temporal)

Neurocranium is responsible for that. Viscerocranium makes up the face.

The facial artery can be palpated over the lower margin of the mandible

The external carotid artery is a major blood vessel that supplies blood to the face and neck. It gives rise to several branches, two of which are the maxillary artery and the superficial temporal artery. The maxillary artery supplies blood to the deep structures of the face, such as the muscles and bones, while the superficial temporal artery supplies blood to the scalp and the side of the head. Therefore, the correct answer is Maxillary and Superficial temporal.

The outer orbital portion of the orbicularis oculi muscle would be used to squint. This muscle surrounds the eye and is responsible for closing the eyelids tightly. When someone squints, they are narrowing their eye opening by contracting this muscle.

The area where the occipital, temporal, and parietal bones meet is called the Asterion

Emissary veins connect to diploë veins. They are a high risk for intracranial transmission of infections.

If the cranial nerve that traverses the parotid gland (CN 7) is severed during parotid gland surgery, it will result in paralysis of that side of the face. This is because CN 7, also known as the facial nerve, innervates the muscles responsible for facial expressions. Therefore, cutting this nerve will lead to the loss of voluntary movement on the affected side of the face. However, it is important to note that the question does not provide information about CN 5, so we cannot make any conclusions regarding its involvement in this scenario.

V2 is sensory not motor.

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4 bones in total.