Exploring the Face: Muscles, Bones, and Blood
Exploring the Face: Muscles, Bones, and Blood
What do you already know about the face’s muscles and bones?
Learning Objective
At the end of the lesson you will be able to identify the major muscles and bones of the face and skull.
Why Study Facial Anatomy?
Understanding facial muscles, bones, and blood helps us to learn about expressions, speech, chewing, and health.
Muscles of the Face: Overview
Facial muscles lie just beneath the skin, allowing movement and expression.
Function
These muscles control facial expressions, speaking, and basic functions like chewing.
Location
Key Muscle: Sternocleidomastoid
Runs from behind the ear down to the collarbone. Turns and nods the head.
Where does the sternocleidomastoid muscle run from?
Around the shoulder to the elbow
From the forehead to the chin
Across the back to the spine
Behind the ear to the collarbone
What movement does the sternocleidomastoid assist with?
Lifts the shoulders up
Flexes the lower back
Turns and nods the head
Raises the arms above the head
What is the location of the sternocleidomastoid?
Runs to the hip joint
Ends at the wrist
Runs down to the collarbone
Starts at the shoulder
Key Muscle: Platysma
Thin sheet of muscle extending from the jaw down the neck. Helps move the lower jaw and tense the neck.
What is the primary function of the platysma?
Aids respiratory function
Supports the spine
Helps move the lower jaw
Tenses the neck
Where does the platysma extend from?
From the jaw
From the shoulder
Down the neck
Across the chest
Key Muscle: Buccinator
Forms the cheek wall. Assists in chewing by pushing food onto the teeth, and in blowing air.
What muscle forms the cheek wall?
Temporalis
Orbicularis oris
Masseter
Buccinator
What function does the Buccinator assist with?
Hearing
Breathing
Chewing food
Running
What action does the Buccinator help with?
Blowing air
Eating soup
Laughing
Singing
Orbicularis Oris & Oculi
Orbicularis oris: closes and puckers the lips. Orbicularis oculi: closes the eyelids.
What is the function of the orbicularis oris?
Closes the eyelids
Flattens the cheeks
Raises the eyebrows
Closes and puckers the lips
What does the orbicularis oculi do?
Closes the eyelids
Raises the mouth corners
Puckers the lips
Furrows the brow
Which muscle is responsible for lip movement?
Masseter
Orbicularis oris
Orbicularis oculi
Zygomaticus major
Other Facial Muscles
Frontalis raises eyebrows, Mentalis pushes up lower lip, Corrugator draws eyebrows together as in frowning.
What does the frontalis muscle do?
Pushes up lower lip
Raises eyebrows
Frowns
Draws eyebrows together
Which muscle pushes up the lower lip?
Frontalis
Mentalis
Corrugator
Orbicularis
What action does the corrugator perform?
Opens mouth
Pushes up lower lip
Raises eyebrows
Draws eyebrows together
Which muscle is involved in frowning?
Zygomaticus
Frontalis
Mentalis
Corrugator
Bones of the Skull: Introduction
The skull is formed by several bones protecting the brain and forming the face’s structure.
Major Skull Bones
Frontal (1), Parietal (2), Temporal (2), Zygomatic (2), Mandible (1), Maxilla (2), Occipital (1), Nasal (2).
Facial Bones: Detail
Nasal: bridge of nose. Frontal: forehead. Parietal, temporal, occipital: back and sides of the skull.
Jaw and Cheek
Other Facial Bones
Mandible: lower jaw. Maxilla: upper jaw. Zygomatic: cheekbones.
Mandible: lower jaw
Maxilla: upper
What is the lower jaw called?
Zygomatic
Mandible
Nasal
Maxilla
What is the upper jaw known as?
Mandible
Palatine
Maxilla
Frontal
Which bone is not part of the jaw?
Temporal
Maxilla
Mandible
Zygomatic
Zygomatic: cheekbones
Frontal: forehead.
What are the cheekbones called?
Zygomatic
Frontal
Mandible
Maxilla
Which term refers to the forehead?
Temporal
Zygomatic
Frontal
Occipital
Which bone is not a cheekbone?
Zygomatic
Mandible
Frontal
Maxilla
Nasal: bridge of nose
Parietal
What is the nasal structure in humans?
Bridge of the nose
Maxilla
Parietal bone
Frontal bone
Which bone is not part of the nasal area?
Vomer
Nasal bone
Maxilla
Parietal bone
What does the nasal bridge connect?
Nose to chin
Nose to forehead
Forehead to cheek
Jaw to neck
Occipital: Base of skull
Temporal: sides of skull
Introduction to Blood Components
Blood transports oxygen and nutrients. Key components: red blood cells and white blood cells.
Summary: Face, Skull, and Blood
You have learned names and functions of key facial muscles, bones of the skull.
Write down 2 things you learned in this lesson.
Write down 2 things you want to know more about.
Ask 1 question about something you haven't quite understood yet.
Session 2: The Blood
Learning objective
What do you already know about the Blood?
Cells in the Blood
Carry oxygen around the body. Give blood its red colour.
Defend the body against infection and disease.
Red Blood Cells
White Blood Cells
Learning Objective
At the end of the lesson you will be able to and describe the main components of blood.
Summary: Face, Skull, and Blood
You have learned names and functions of key facial muscles, bones of the skull, and the main blood cell types.