Week 2 Flashcards
how do you know you’re feeling lymph nodes and not something else
stand behind patient and palpate to feel differences in both sides
where is the hyoid bone
in corner between submandibular region and the front of the neck
where are the submandibular lymph nodes
medial to the mandible
what do the submandibular lymph nodes drain
the mouth, nasal cavity, maxillary sinus, lower parts of the face
if enlarged lymph nodes are painful what does this suggest
caused by infection
if enlarged lymph nodes are not painful what does this suggest
might be malignant change
apart from infection and malignant change why else might lymph nodes be enlarged
if they have had inflamed lymph nodes in the past there might be fibrous change so completely benign but still might feel them
what do the submental nodes drain
most anterior parts of the the lower mouth (lower lip, skin and chin, tip of tongue, front of floor of mouth, anterior teeth
where is the submandibular salivary gland
between angle of mandible and hyoid bone
wher is the platysma muscle
just above the mandible and into the face, sweeping down below the skin on each side of the neck and going into the upper chest
what does platysma do
maintains the tone of the tissue in the neck, muscle of facial expression
where is the anterior belly of digastric muscle
attaches to the inside of the mandible at the front (a little depression in the deep aspect of the mandible)
where is the mylohyoid muscle
deep to the digastric, coming from about half way up the mandible (not from the edge). Back fibres attach to the front of the hyoid bone and further forward the fibres are running onto a band of connective tissue in the midline.
when designing dentures why is the mylohyoid muscle important
the muscle has a free edge to it and the lower denture has to fit round the free edge of the muscle, need to be sitting above it otherwise when you speak and eat the muscle will lift the denture
where is the sternoclidomastoid muscle
from the medial of the clavicle and the manubruim (part of sternum) and heads up towards the mastoid process (bony projection on the base of the skull just behind your ear
where is the external jugular vein
forms near the angle of mandible and runs down over the sternoclidomastoid
what does a distended external jugular vein indicate when a patient is sitting up
potential cardiac failure, perhaps obstruction, perhaps something further down pressing on the veins which has caused it to fill up
where is the sternohyoid muscle
sternum to hyoid bone
where is the omohyoid muscle
attaches scapula (shoulder) to hyoid bone
what actions do the sternohyoid and omohyoid carry out
move the hyoid bone up and down
are the sternohyoid and omohyoid superficial or deep
superficial
where is the sternothyroid muscle
sternum to thyroid cartilage
where is the thyrohyoid muscle
muscle on the top end of the thyroid cartilage which goes to the hyoid bone
what are the strap muscles
- sternohyoid
- omohyoid
- thyrohyoid
- sternothyroid
