Human Body Lab 2

Question 1

Trapezius Function

Answer 1

Extends the head

Question 2

Latissimus dorsi functions

Answer 2

Adducts humerus pulling it medically and towards pelvis; pulls humerus behind trunk

Question 3

Teres major function

Answer 3

Extend and addict arm at shoulder joint

Question 4

Levator scapulae function

Answer 4

Moves pectoral girdle

Question 5

Rhomboid major function

Answer 5

Scapulae rotation

Question 6

Erector spinae group (iliocostalis, longissimus, spinalis) function

Answer 6

Postural muscles, acting together, they extend vertebral column or head; acting on one side they laterally bend the vertebral column

Question 7

Pectoralis major function

Answer 7

adduction of shoulder joint, rotates upper arm medially

Question 8

Pectoralis minor function

Answer 8

Pulls scapulae anteriorly or interiorly, elevates 3rd and 5th ribs and expands rib cage which aids in inspiration

Question 9

Serratus anterior function

Answer 9

Pulls scapula forward and around, as if punching

Question 10

Supraspinatus function

Answer 10

Abducts arm, as if raising out to the side, stabilizes shoulder joint

Question 11

Infraspinatus function

Answer 11

Reinforces glenohumeral joint

Question 12

Teres minor function

Answer 12

Extend and adduct arm at shoulder joint

Question 13

Subscapularis function

Answer 13

Reinforces glenohumeral joint

Question 14

Deltoid function

Answer 14

Moves brachium

Question 15

External/internal intercostals function

Answer 15

External: elevate ribs during inhalation

Internal: depress rubs during exhalation

Question 16

External/ internal abdominal oblique function

Answer 16

Both flex vertebral column when one contracts trunk is rotated or bent laterally; abdominal support and compression

Question 17

Transversus abdominus function

Answer 17

Abdominal support and compression

Question 18

Rectus abdominus function

Answer 18

flexes vertebral column, supports and compresses abdomen, tendinous intersections crossing muscle causes “six pack” look, surrounded by rectus sheath

Question 19

Tendinous intersections fucntion

Answer 19

aids in flexion

Question 20

Linea alba function

Answer 20

for our purposes this serves as a landmark

Question 21

Rectus sheath function

Answer 21

surrounds rectus abdominus

Question 22

Articulation

Answer 22

refers to two bones coming together

Question 23

Attachment

Answer 23

refers to a muscle connecting a bone

Question 24

Vertebral body function

Answer 24

weight bearing portion of spine

Question 25

vertebral foramen function

Answer 25

passage of spinal cord

Question 26

lamina (singular) description

Answer 26

arched/flattened part forming the roof of the spinal canal

Question 27

lamina (singular) function

Answer 27

forms part of spinal canal

Question 28

spinous process function

Answer 28

muscle attachment site

Question 29

transverse process function

Answer 29

muscle attachment site

Question 30

superior/ inferior articular processes function

Answer 30

2 bones come together, this provides stability and a range of motion to the spine

Question 31

Intervertebral discs function

Answer 31

provide cushioning between vertebrae to help prevent friction

Question 32

transverse foramen/foramina (plural) function

Answer 32

passageway for the vertebral artery/vein

Question 33

Atlas (C1) description

Answer 33

vertebrae directly beneath the skull

Question 34

Atlas (C1) function

Answer 34

articulates the skull

Question 35

Axis (C2) description

Answer 35

second cervical vertebrae

Question 36

Axis (C2) function

Answer 36

articulates with the atlas via the den

Question 37

Den or odontoid process description

Answer 37

tooth like projection on the axis

Question 38

Den or odontoid process function

Answer 38

articulates with the axis

Question 39

Sacrum (5 fused vertebrae) Function

Answer 39

helps form pelvis and form joints

Question 40

Coccyx (3-5 fused vertebrae) description

Answer 40

small bone projection off the sacrum

Question 41

Os Coxae

Answer 41

Pelvis bone

Question 42

Iliac Crest function

Answer 42

muscle attachment

Question 43

Anterior Superior Iliac Spine function

Answer 43

bone markings, landmarks, attachment point for muscle, nerves, and vessels

Question 44

Anterior Inferior Iliac Spine function

Answer 44

bone markings, landmarks, attachment point for muscles

Question 45

Posterior Superior Iliac Spine function

Answer 45

Bone markings, landmarks, attachment point for muscles

Question 46

Posterior Inferior Iliac Spine function

Answer 46

Bone markings, landmarks, attachment point for muscles

Question 47

iliac fossa (medial) function

Answer 47

muscle attachment

Question 48

ischium function

Answer 48

forms posterior part of coxal bone

Question 49

ischial spine function

Answer 49

attachment for ligaments and muscles

Question 50

ischial tuberosity function

Answer 50

attachment of hamstring muscles

Question 51

pubis function

Answer 51

connect ilium and ischium

Question 52

pubic symphysis function

Answer 52

absorbs shock while walking and can split during the delivery of a baby

Question 53

obturator foramen function

Answer 53

passage for vessels and nerves

Question 54

acetabulum functionn

Answer 54

articulates with head of femur

Question 55

coccyx function

Answer 55

weight bearing, support, balance, when in seated position

Question 56

Head (ribs) function

Answer 56

articulates with vertebral body

Question 57

Body (ribs) function

Answer 57

muscle attachment

Question 58

costal groove function

Answer 58

muscle attachment, vessels, and nerves found in grooves

Question 59

sternum function

Answer 59

muscle attachment, protects organs in thoracic cavity

Question 60

manubrium function

Answer 60

muscle attachment, articulates with some costal cartilages, sternal ends of clavicles

Question 61

Xiphoid process function

Answer 61

muscle attachment site and linea alba