MCPHS Anatomy and Physiology Exam 3 Qiuestions With Correct Answers

MCPHS Anatomy and Physiology Exam 3
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1. The |Origin: |point |of |attachment |that |does |not |move |when |the |muscle
|contracts
2. The |insertion: |the |point |of |attachment |of |a |muscle |to |the |part |that |it
|moves
3. Fascicle |arrangement: |circular, |convergent, |parallel, |pennate, |fusiform
4. Circular |muscle: |arranged |in |a |circle |around |an |opening |and |act |as
|sphincters; |ex: |orbicularis |oris |and |orbicularis |oculi
5. convergent |muscles: |converge |at |a |single |tendon; |ex: |pectoralis |major,
|pec- |toralis |minor
6. parallel |muscles: |lie |parallel |to |one |another |and |to |the |long |axis |of |the
|muscle; |ex: |trapezius
7. Pennate |muscles: |fascicles |originate |from |tendon |that |runs |the |length |of
|the |en- |tire |muscle; |has |three |different |patterns: |unipennate
|(semimembranosus), |bipennate |(rectus |femoris), |and |multipennate |(deltoid)
8. Fusiform |muscles: |fascicles |lie |parallel |to |the |long |axis |of |the |muscle.
|The |belly |of |the |muscle |is |larger |in |diameter |than |the |ends; |ex: |biceps
|brachii |(two-headed) |triceps |brachii |(three-headed)
9. How |muscles |are |named: |1. |location
2. Size
3. shape
4. orientation |of |fascicles
5. origin |of |insertion
6. number |of |heads
7. function
10. Do |muscles |work |as |levers, |fulcrums |or |weight?: |levers
11. Class |I |lever |system: |fulcrum |is |between |pull |and |weight |(seesaw)
12. Class |II |lever |system: |weight |is |between |the |fulcrum |and |the |pull
|(wheelbarrow)
13. Class |III |lever |system: |Most |common |in |body, |pull |is |between
|fulcrum |and |weight |(person |using |shovel)
14. Posterior |muscles |of |the |neck: |longissimus |capitis, |oblique |capitis
|superior, |rectus |capitis |posterior, |semispinalis |capitis, |splenius |capitis,
|trapezius
15. longissimus |capitis: |insertion: |mastoid
|process |function: |extends, |rotates, |and |laterally
|flexes |neck
16. oblique |capitis |superior: |insertion: |occipital
|bone |function: |extends |and |laterally |flexes |neck;
|turns |head
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, MCPHS Anatomy and Physiology Exam 3
| | | | |


Study |online |at |https://quizlet.com/_c770wr
17. rectus |capitis |posterior: |insertion: |occipital
|bone |function: |extends |and |rotates |neck; |turns
|head
18. semispinalis |capitis: |insertion: |occipital
|bone |function: |extends, |rotates, |and |laterally
|flexes |neck
19. trapezius: |insertion: |clavicle, |acromion |process |and |scapular
|spine |function: |extends |and |laterally |flexes |neck




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, MCPHS Anatomy and Physiology Exam 3
| | | | |


Study |online |at |https://quizlet.com/_c770wr


20. splenius |capitis: |insertion: |superior |nuchal |line |and |mastoid
|process |function: |extends, |rotates, |and |laterally |flexes |neck
21. lateral |muscles |of |the |neck: |sternocleidomastoid, |scalene |muscles
22. sternocleidomastoid: |insertion: |mastoid |process |and |superior |nuchal |line
|function: |one |contracting |alone: |laterally |flexes |head |and |neck |at |the |same
|time |and |rotates |head |and |neck |to |opposite |side; |both |contracting: |flex
|neck
23. scalene |muscles: |insertion: |first |and |second
|ribs |function: |flex, |laterally |flex, |and |rotate |neck
24. buccinator: |insertion: |orbicularis |oris |at |corner |of |mouth
function: |draws |corners |of |mouth |posteriorly; |compresses |cheek |to |hold |food
|be- |tween |teeth
25. corrugator |supercili: |insertion: |skin |of |eyebrow
function: |depresses |medial |portion |of |eyebrow; |draws |eyebrows |together, |as |in
|frowning
26. depressor |anguli |oris: |origin: |lower |border |of
|mandible |insertion: |skin |lip |near |corner |of |mouth
function: |lowers |corner |of |mouth; |frown
27. depressor |labii |inferioris: |origin: |lower |border |of
|mandible |insertion: |skin |of |lower |lip |and |orbicularis |oris
function: |depresses |lower |lip
28. levator |anguli |oris: |origin: |maxilla
insertion: |skin |at |the |corner |of |mouth |and |orbicularis |oris
|function: |raises |corner |of |mouth
29. levator |labii |superioris: |origin:
|maxilla |insertion: |skin |and |orbicularis |oris
|of |upper |lip |function: |raises |upper |lip;
|sneer
30. levator |labii |superioris |alaeque |nasi: |origin:
|maxilla |insertion: |sides |of |nostrils |and |upper |lip
function: |elevates |sides |of |nose |and |upper |lip
31. levator |palpebrae |superioris: |origin: |lesser |wing |of
|sphenoid |insertion: |Skin |of |eyelid
function: |Elevates |upper |eyelid; |opens |eye
32. mentalis: |origin:
|mandible |insertion: |skin |of
|chin
function: |elevates |and |wrinkles |skin |over |chin; |protrudes |lower |lip; |pout
33. nasalis: |origin: |maxilla
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