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ANAT 411 BC m & bone
ANAT 411 BC mm
| Question | Answer |
|---|---|
| protects vital thoracic and abdominal organs; provides attachment for anchoring and support of the weight of upper limbs; supports internal pressure from respiratory movements; provides attachment for muscles of abdomen, neck, body, and thorax | thoracic cage |
| connects sternum to ribs | costal cartilages |
| curved, flat bones that form most of the thoracic cage | ribs |
| 1st through 7th ribs, directly attached to sternum through their own costal cartilages | true ribs |
| 8th through 10th ribs, cartilages of ribs attach to the superior rib, connection with sternum is indirect | false ribs |
| 11th and 12th ribs, cartilages do not connect with sternum | floating ribs |
| which ribs are considered atypical because they have attachment points for muscles | 1st (scalenes) and 2nd (serratus ant.) |
| joint of sternal body and manubrium; used to find position of rib 2, separates superior mediastinum and inferior mediastinum, marks where arch of aorta begins and ends, level where trachea bifurcates into right and left bronchi | sternal angle |
| movement of ribs, transverse dimension of thorax increases slightly which raises middle (later-most) part of ribs | bucket-handle movement |
| movement of ribs, ant. to post. dimension of thorax increases and movement at the costotransverse joint cause the ant. rib ends to rise | pump-handle movement |
| external intercostal, internal intercostal, innermost intercostal, serratus ant., transverse thoracis | muscles of thoracic wall |
| muscle of thoracic wall, pulls scapula forward around thorax which allows for anteversion and protraction of arm, innervated by long thoracic n. (C5, C6, C7), lesion is correlated with winged scapula | serratus ant. m. |
| muscle of thoracic wall, found on deep surface of thoracic wall and secures int. thoracic vessels, originates from post. aspect of sternum and ribs, inserts on superior costal cartilages | transverse thoracis m. |
| actions: adducts and medially rotates humerus, draws scapula ant. and inf. nerves: lat. and med. pectoral nerves | pectoralis major m. |
| actions: draws scapula inf. and ant. against the thoracic wall nerve: med. pectoral n. | pectoralis minor m. |
| muscle of abdominal wall, "hands in pockets" | external oblique m. |
| muscle of abdominal wall, deep to ext. oblique | internal oblique m. |
| muscle of abdominal wall, deep to internal oblique, runs horizontally | transverse abdominis m. |
| muscle of abdominal wall, runs vertically, "abs", deep to other muscles | rectus abdominis m. |
| actions: support and compress abdominal viscera all of them turn into rectus sheath either ant. or post. | abdominal muscles |
| iliac crest, iliac fossa, gluteal surface, greater and lesser sciatic notches, ischial spine, superior pubic ramus, pubic tubercle, inferior pubic ramus, obturator foramen, ischial tuberosity | parts of boney pelvis |
| spans from sacrum to ischial spine | sacrospinous ligament |
| starts at sacrum and goes down to ischial tuberosity | sacrotuberous ligament |
| foramen of pelvis, allows for communication with lower limb and gluteal region | greater sciatic notch |
| foramen of pelvis, allows for communication with perineum | lesser sciatic notch |
| foramen of pelvis, allows for communication with adductor region of lower limb | obturator canal |
| part of pelvis, everything inferior to inlet of pelvis that forms the "bowl" | lesser/true pelvis |
| part of pelvis, above true, how for ilium protrudes up | greater/false pelvis |
| muscle of pelvic diaphragm/floor, supports pelvic cavity contents, intra-abdominal pressure resistance, flexes coccyx, under "bowl" of pelvis | coccygeus m. |
| muscle of pelvic diaphragm/floor, makes up post. boundary actions" ext. rotation of thigh, thigh abduction, stabilizes head of femur nerve: n. to piriformis | piriformis m. |
| muscle of pelvic diaphragm/floor, foramen is covered by fascia actions: ext. rotation of femur and abduction of flexed thigh nerve: n. to obturator internus | obturator internus m. |
| muscle of pelvic diaphragm/floor; 3 separate muscles that are named due to attachments: iliococcygeus m., pubococcygeus m., puborectalis m. actions: support of pelvic cavity contents, intra-abdominal pressure resistance nerve: n. to levator ani | levator ani muscles |
| levator ani m., ilium to coccyx | iliococcygeus m. |
| levator ani m., pubis to coccygeus ligament | pubococcygeus m. |
| levator ani m., pubis, around rectum | puborectalis m. |
| opening where obturator n. and vessels travel from pelvis to lower limb | obturator canal |
| can also be found crossing over pelvic brim and entering the canal as a branch from the ext. iliac a. | aberrant obturator a. |
| rectum, bladder, urethra, uterus, fallopian tubes, ovaries, vagina, prostate, seminal vesicles, ductus (vas) deferens | major structures of pelvis |
| bundles of smooth m., when it pushes you feel the need to pee, thicker in men | detrusor m. |
| found in int. urethral orifice, made of smooth m. and therefore is involuntary | internal urethral sphincter m. |
| muscle of perineum, runs on side of erectile tissue, contraction of erectile tissue for ejaculation | ischiocavernosus m. |
| muscle of perineum, contraction of erectile tissue for ejaculation | bulbospongiosus m. |
| perineum, important for triangles, where they meet | perineal body |
| muscle of perineum, lat. to perineal body | transverse perineal muscles |
| muscle of perineum, resists defecation and contracts anal canal, nerve: pudendal n., voluntary | external anal sphincter m. |
| muscle of perineum, compresses urethra to maintain urinary continence, nerve: pudendal n., voluntary | external urethral sphincter m. |
Created by:
emma.scarmon-coyotes
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