Brs gross anatomy - Study guides, Class notes & Summaries

If a stab wound lacerated the posterior humeral circumflex artery passing through the quadrangular space on the shoulder region, which of the following nerves would be injured? A) Radial nerve B) Axillary nerve C) Thoracodorsal nerve D) Suprascapular nerve E) Accessory nerve - ANSWER-B) The axillary nerve runs posteriorly to the humerous, accompanying the posterior humeral circumflex artery through the quadrangular space and innervating the teres minor and deltoid muscles - none of the oth...

Axial skeleton - includes the skull, vertebral column, ribs, and sternum. Bones - serve as a reservoir for calcium and phosphorus and act as biomechanical levers on which muscles act to produce the movements. Long bones - have a shaft (diaphysis) and two ends (epiphyses). The metaphysis is a part of the diaphysis, the growth zone between the diaphysis and epiphysis during bone development. Sesamoid bones - develop in certain tendons and reduce friction on the tendon. Osteoblast - synthesiz...

(C) In the left fifth intercostal space Rationale: On the surface of the chest, the apex of the heart can be located in the left fifth intercostal space slightly medial to the midclavicular (or nipple) line. The sternal angle is located at the level where the second ribs articulate with the sternum. The xiphoid process lies at the level of T10 vertebra. - ANSWER-1. A 32-year-old patient who weighs 275 lb comes to the doctor's office. On the surface of the chest, the physician is able to loc...

1. A 27-year-old patient exhibits a loss of skin sensation and paralysis of muscles on the plantar aspect of the medial side of the foot. Which of the following nerves is most likely damaged? (A) Common peroneal (B) Tibial (C) Superficial peroneal (D) Deep peroneal (E) Sural - ANSWER-(B) Tibial Rationale: The common peroneal nerve divides into the deep peroneal nerve, which innervates the anterior muscles of the leg and supplies the adjacent skin of the first and second toes, and the su...

(E) Round ligament of the uterus Rationale: The round ligament of the uterus runs laterally from the uterus through the deep inguinal ring, inguinal canal, and superficial inguinal ring and becomes lost in the subcutaneous tissues of the labium majus. Thus, carcinoma of the uterus can spread directly to the labium majus by traveling in lymphatics that follow the ligament. - ANSWER-1. A 68-year-old woman with uterine carcinoma undergoes surgical resection. This cancer can spread directly to ...

1. A 68-year-old woman with uterine carci noma undergoes surgical resection. This cancer can spread directly to the labia majora in lymphatics that follow which of the following structures ? (A) Pubic arcuate ligament (B) Suspensory ligament of the ovary (C) Cardinal (transverse cervical) ligament (D) Suspensory ligament of the clitoris (E) Round ligament of the uterus - ANSWER-1. The answer is E. The round ligament of the uterus runs laterally from the uterus through the deep inguinal r...

A 32-year-old patient who weighs 275 lb comes to the doctor's office. On the surface of the chest, the physician is able to locate the apex of the heart: (A) At the level of the sternal angle (B) In the left fourth intercostal space (C) In the left fifth intercostal space (D) In the right fifth intercostal space (E) At the level of the xiphoid process of the sternum - ANSWER-The answer is C. On the surface of the chest, the apex of the heart can be located in the left fifth intercostal space sl...

First bone to begin ossification among shoulder girdle? - ANSWER-CLAVICLE Last bone to fuse among should girdle? - ANSWER-CLAVICLE Most common fracture site of CLAVICLE? - ANSWER-middle-third Shoulder girdle bone that ossifies intra-membranously? - ANSWER-CLAVICLE Key anatomical landmarks of SCAPULA - ANSWER-spine of scapula acromion coracoid process scapular notch What two structures originate or insert into the SPINE of Scapula - ANSWER-deltoid trapezius What two structur...

(B) Tibial Rationale: The common peroneal nerve divides into the deep peroneal nerve, which innervates the anterior muscles of the leg and supplies the adjacent skin of the first and second toes, and the superficial peroneal nerve, which innervates the lateral muscles of the leg and supplies the skin on the side of the lower leg and the dorsum of the ankle and foot. The sural nerve supplies the lateral aspect of the foot and the little toe. - ANSWER-1. A 27-year-old patient exhibits a loss o...