Name Lab Section Date EXERCISE 11 REVIEW SHEET Muscles of the Head, Neck, and Tr
ID: 3476811 • Letter: N
Question
Name Lab Section Date EXERCISE 11 REVIEW SHEET Muscles of the Head, Neck, and Trunk 1. The rectus abdominis covers the anterior abdominal wall. Its superion attachment includes the xiphoid process and costal cartilages of ribs 5 throug!h 7; its inferior attachment includes the pubic symphysis and pubic crest. The muscle depresses the ribs and flexes the vertebral column. Which attachment (superior or inferior) is the origin, and which is the insertion? Explain. cartlilage - Xyphoid Rectus Pubic abdominis 2. When the hyoid bone is elevated, the suprahyoid muscles are the agonists. What musdles act as antagonists? Explain.Explanation / Answer
The rectus abdominis covers the anterior abdominal wall. Its superior attachment includes the xiphoid process and costal cartillages of ribs 5 through 7 its inferior attachment includes the pubic symphysis and pubic crest. The muscle depresses the ribs and reflexes the vertebral column. Which attachment superior or inferior is the origin and which is the insertion.
ANS) In Rectus abdominis covers the proximal or inferior attachements are the pubic crest and symphysis that acts as origin whereas the distal or superior attachement are the xiphoid process of the sternum and costal cartilages 5-7 that acts as insertion.The rectus abdominis muscle contained inside the rectus sheath, which includes the aponeuroses of the lateral belly muscular tissues form bands of connective tissue referred to as the tendinous intersections traverse which further separates the parallel muscle into wonderful muscle bellies. The outer and the most lateral line defining the abs is the linea semilunaris. Inside the abdomens of human beings with low body fat, those bellies can be viewed externally and are usually referred to as 6 packs
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