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Muscles Items to note: Quiz #2 opens today and is available until Monday 4/23 Markus Hartel · New York street photography Leonardo Di Vinci.

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Presentation on theme: "Muscles Items to note: Quiz #2 opens today and is available until Monday 4/23 Markus Hartel · New York street photography Leonardo Di Vinci."— Presentation transcript:

1 Muscles Items to note: Quiz #2 opens today and is available until Monday 4/23 Markus Hartel · New York street photography Leonardo Di Vinci

2 1. Name the 3 layers of connective tissue that wrap
around skeletal muscles. 2. Which one(s) is (are) continuous with a tendon? 3. Botox (botulinum toxin) works by blocking the release of ACh at the neuromuscular junction. How does this help with: crossed eyes uncontrolled blinking pesky forehead wrinkles

3 To do today and Wednesday
how muscles work – in general muscles that move the mandible abdominal wall muscles anterior and posterior inferior and superior inguinal hernia’s muscles that move the humerus and scapula rotator cuff tears, impingement syndrome muscles that move the femur sprains, strains and “Charley horse” muscles that move the foot shin splints, anterior compartment syndrome Achilles tendon injuries

4

5 Extending your knee Extend your knee a few times
How muscles work in general Extending your knee Extend your knee a few times Where are the muscles located that extend your knee? What is their fiber direction? Which joint do they cross? When you extend you knee, where are the antagonist muscles located?

6 Quadriceps = agonists Hamstrings = antagonists

7 Moving the mandible Depress & elevate Medial & lateral excursion
Mandibular fossa Depress & elevate Medial & lateral excursion Protraction & retraction

8 Muscles that move the mandible
Temporalis Masseter attachments actions

9 Lateral pterygoid Medial pterygoid attachments actions

10 Depress mandible gravity digastric muscle geniohyoid muscle when hyoid is fixed

11 Those flashy “core” muscles
Overdeveloped Pectoralis major External oblique Rectus abdominus

12 Muscles that move (and protect) the abdomen
Internal oblique Transversus abdominis Rectus abdominis Attachments Actions External oblique

13 Linea alba B A C D Rectus sheath (aponeurosis)

14 Abdominal wall abdominal muscles back muscles diaphragm pelvic diaphragm “holes” in the wall

15 Inguinal canal – men & women
Parietal peritoneum intestines scrotum Spermatic cord

16 Muscle that move the humerus and scapula
Location of shoulder muscles Which joints do these muscles cross?

17 3. What is the fiber direction of these muscles?
4. What movements do these muscle perform?

18 Deltoid attachments actions

19 attachments actions

20 attachments actions 4 Rotator cuff muscles supraspinatus infraspinatus
Teres minor subscapularis attachments actions

21 Scapula movers attachments actions Levator scapulae trapezius
rhomboids

22

23 Impingement syndrome Rotator cuff tears

24

25 Muscles that move the femur
1. Location of hip and thigh muscles 2. Which joints do these muscles cross?

26 3. What is the fiber direction of these muscles?
4. What kind of movements do these muscle perform?

27 iliopsoas adductors attachments actions

28 attachments actions Charley horse Tensor Fasciae Latae (TFL) Rectus
femoris Vastus lateralis vastus intermedius Vastus medialis Patellar tendon attachments actions Charley horse

29 attachments actions Tensor Fasciae Latae G. Maximus Iliotibial Band
(IT band) attachments actions

30 G. minimus G. Medius piriformis G. Maximus attachments actions

31 attachments actions

32 Anterior Posterior

33

34 Attachments of the gastrocnemius Attachments of the soleus
Actions of the gastrocnemius Flex the knee Plantarflex the foot Actions of the soleus gastrocnemius Achilles tendon Ruptured Achilles tendon Pulled calf muscle calcaneus

35 Tibialis Anterior Attachments Actions Dorsiflex ankle Invert foot
Support arch Shin splints

36 Anterior compartment syndrome
TA Anterior compartment syndrome


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