A&P - Chapter 38 (Part 2) Flashcards
What are the lateral wall muscles of the cheeks made from?
Buccinator muscle
What does the buccinator muscle contain?
Mucous-secreting glands
What are the anterior walls formed by?
The lips
Oral fissuer
Line of contact between closed lips
What is the function of the salivary glands?
Secretes saliva
How much saliva is secreted each day?
1 L
What are the 2 components of saliva?
- Salivary amylase
2. Mucus
What are the salivary glands made up of? (3)
- Parotid glands
- largest - Submandibular glands
- below mandible - Sublingual glands
- below tongue
Where is the parotid gland located?
Bottom of the ear at the jaw angle
What are the parotid glands?
They are ducts that secrete into the mouth cavity
What do parotid glands do?
Produce watery saliva containing enzymes
Where is the submandibular glands?
In the middle of the mandible
What are the submandibular glands?
They are ducts that secrete on either side of lingual frenulum
What do the submandibular glands contain?
Enzyme and mucous producing substances
Where are the sublingual glands located?
Anterior to submandibular glands
What are the sublingual glands?
They are ducts that secrete into the floor of the mouth
What is the function of the sublingual glands?
They produce a mucus type of saliva
What are the 3 sections of a typical tooth?
- Crown
- Neck
- Root
What is the crown of the tooth covered by?
Enamel
Enamel
Hardest tissue in the body, which is perfect for withstanding the abrasion of chewing food
Where is the pulp cavity?
In the centre of the tooth
What does the pulp cavity contain? (3)
- Connective tissue
- Blood and lymphatic vessels
- Sensory nerves
What does the neck of the tooth do?
Joins the crown to the root
What is the neck of the tooth surrounded by?
Pink tissue
What is pink tissue also called?
Gingival tissue
- gums
Where does the root of the tooth fit?
In the socket/jaw bone
What is the socket that fits the tooth lined with?
Periodontal membrane
What does periodontal membrane do?
Anchors the tooth to the bone
Deciduous teeth
Baby teeth
How many deciduous teeth do we have?
20 teeth
What is the average of for the first eruption as a child?
6 months
- 8 incisors are cut first
When do you get your complete set of baby teeth?
2 years of age
What do baby teeth not have?
Premolars
- 2 pairs of molars per jaw
- lost between 6 – 13 years of age
What are permanent teeth known as?
Adult teeth
How many adult teeth do you have?
32
What is the average age of the first eruption as an adult?
6 years
When do you get a complete set of 32 teeth?
Age 17-24 years of age
