Lectures Flashcards
Name the regions of the abdomen.
From cranioventral clockwise : Xiphoid, left hypochondral, left flank, left inguinal, pubic, right inguinal, right flank, right hypochondral - and umbilical in the middle
What is the cranial region of the abdomen bounded by?
Xiphoid cartilage and the L and R hypochondral
What is the middle region of the abdomen bounded by?
Umbilical in middle, L and R flank either side
What is the caudal region of the abdomen bounded by?
Pubic area in the middle, L and R inguinal either side
What are the three lateral muscles of the abdominal wall? Which order are they in?
From superficial to deep: External abdominal oblique (travels cranial to caudal), Internal abdominal oblique ( travels caudal to cranial), Transverse abdominus (travels dorsoventrally)
What is the term for a midline vental surgical incision?
Midline coeliotomy
Which muscle forms the ventral boundary of the abdominal cavity
Left and right rectus abdominus
The labial surface of the tooth faces the
Lips
The buccal surface of the tooth faces the
Cheeks
The lingual surface of the tooth faces the
Tongue
The vestibular surface of the tooth faces the
Lips or cheeks depending on its location
Interproximal or interdental surfaces face
Teeth in the same arcade
The mesial surface of a tooth faces the adjacent tooth that is
Closest to midline
The distal surface of a tooth faces the adjacent tooth that is
Furthest from midline
The crown is the
Part of the tooth that is covered in enamel
What is the difference between the clinical crown and the reserve crown?
In hyposodont teeth only. The reserve crown is the portion of the crown that remains beneath the gumline.
What is the name of the tooth section that has no enamel coating?
The root
Which substance forms the outermost layer of hypsodont teeth?
Cementum
Which substance occurs in both the root and crown of brachydont teeth?
Dentine
Eruption commences before root formation in which tooth type?
Hypsodont
Which cells synthesise enamel?
Ameloblasts
What features of enamel make it an effective tooth covering?
- strong and smooth to protect tooth from mechanical wear and infection
- forms sharp ridges to assist with mastication
Which cells synthesise dentine?
Odontoblasts
What is the location and function of primary dentine?
It is the second layer after the enamel. It functions to protect the pulp cavity if the enamel layer becomes compromised