CSCC BIO 2300 Unit 4 Exam-Questions and Correct Answers (Expert verified) / Latest Update 2024/2025/100% Pass
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Course
CSCC Bio 2300
Institution
CSCC Bio 2300
Manubrium of sternum - Articulates with ribs 1, 2, & clavicles. Sternocleidomastoid
muscles also attach here.
Jugular Notch - central indentation in superior border of manubrium
Sternal Angle - Ridge between manubrium and body at second rib
Body of Sternum - the bony structure that forms the mi...
CSCC BIO 2300 Unit 4 Exam -Questions and Co rrect Answers (Expert verified ) / Latest Update 2024/2025/ 100% Pass Manubrium of sternum - ✔✔Articulates with ribs 1, 2, & clavicles. Sternocleidomastoid muscles also attach here. Jugular Notch - ✔✔central indentation in superior border of manubrium Sternal Angle - ✔✔Ridge between manubrium and body at second rib Body of Sternum - ✔✔the bony structure that forms the middle portion of the sternum Xiphoid process of sternum - ✔✔bottom of sternum Costal Margin - ✔✔lower border of rib margin formed by the medial edges of the 8th, 9th, and 10th ribs True Rib - ✔✔a rib that is attached directly to the breastbone (1 -7) False Rib - ✔✔8-12, This rib attaches to the vertebrae in the back and indirectly to the sternum through cartilage (two words singular) 1st Rib - ✔✔origin of subclavius 7th Rib - ✔✔longest rib 12th Ri b - ✔✔Inferior extent of pleura posteriorly Costal Cartilage - ✔✔connects ribs to sternum; hyaline cartilage Head of Rib - ✔✔Articulates with the costal facet of a thoracic vertebral body. Neck of Rib - ✔✔narrowed region of a rib, next to the rib head Body of Rib - ✔✔main part of the rib distal to the neck Tubercle of Rib - ✔✔A structure in the neck of the rib that articulates with the costal facet of a thoracic vertebra's transverse process. Angle of Rib - ✔✔portion of rib with greatest curvature; together, the rib angles form the most posterior extent of the thoracic cage Costal Groove of Rib - ✔✔muscle attachment; arteries, veins, and nerves run in the groove Superior Pubic Ramus - ✔✔narro w segment of bone that passes laterally from the pubic body to join the ilium Ischiopubic Ramus - ✔✔narrow extension of bone that connects the ischial tuberosity to the pubic body; formed by the junction of the ischial ramus and inferior pubic ramus Pubi c Arch - ✔✔Inverted V -shaped arch inferior to pubic symphysis. Over 90 ° in females, and about 60 ° in males. Pubic Symphsis - ✔✔A hard, bony, and cartilaginous prominence found at the midline in the lowermost portion of the abdomen where the two halves of the pelvic ring are joined by cartilage at a joint with minimal motion. Ischial Spine - ✔✔located superior to the ischial tuberosity and projects medially into the pelvic cavity Sacrospinus Ligament - ✔✔from sacrum and coccyx to spine of ischium Ischial Tuberosity - ✔✔receives the weight of the body when sitting Sacrotuberous Ligament - ✔✔connects sacrum to ischial tuberosity Pelvic Inlet - ✔✔superior opening of true pelvis; bordered by pelvic brim Male Pelvis - ✔✔Tilted less far forward Adapted for s upport of male's heavier build and stronger muscles Cavity of true pelvis is narrow and deep Female Pelvis - ✔✔tilted forward, adapted to childbearing, broad, shallow, pubic angle lightweight, 80 -90◦ Urogenital Triangle - ✔✔contains the urethral and vagi nal orifices in females and the base of the penis and scrotum in males Anal Triangle - ✔✔contains the anus and external anal sphincter in both sexes External Intercostal M. - ✔✔when they contract, they elevate the ribs which results in an increase in anteroposterior and lateral diameters of the chest cavity; responsible for 25% of the air entering lungs during normal quiet breathing Internal Intercost al M. - ✔✔Muscle of respiration Depression of ribs during forced exhalation to decrease transverse dimensions (anterior -
posterior, medial -lateral) of thoracic cavity Innermost Intercostal M. - ✔✔-the deeper fibers of the internal intercostal muscle -separ ated from the internal intercostals by the intercostal nerves & vessels Transversus Thoracis M. - ✔✔depress ribs (maybe proprioception)
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