BS1 non-clinical and clinical Qs

In a patient with trauma to the shoulder the best way to assess the integrity of the suprascapular nerve is to ask him/her to A-flex the arm B-adduct the arm C-abduct the arm D-extend the arm E-medially rotate the shoulder

Abduction would immediately test the integrity of the suprascapular nerve, which innervates the supraspinatus muscle responsible for initiating abduction for 10-15 degrees, after which the deltoid muscle takes over via the axillary nerve.

Identify A-Trapezius B-Pectoralis major C-Pectoralis minor D-Coracobrachialis E-Serratus anterior

Pectoralis minor

ID this muscle A-Sartorius B-Biceps femoris C-Vastus medialis D-Vastus intermedius E-Rectus femoris

answer is Rectus femoris Description: The muscle at the pointer is the rectus femoris of the anterior muscle group. It attaches to the anterior tibia with the other quad muscles. Vastus intermedius deep to rectus femoris and vastus medialis lies medial to rectus femoris. Sartorius has been reflexed and travels across the thigh attaching medially to the tibia. Biceps femoris is on the posterior aspect of the thigh. :)

Identify: A-coracoid process B-acromion C-lateral angle D-inferior angle E-neck

inferior angle

In the mid-axillary line, the inferior extent of the inferior border of the lung during quiet respiration is at which rib level?

the answer is 8 Description: In the midaxillary line, the inferior edge of the lung reaches the 8th rib. The parietal pleura reaches the 10th rib in the midaxillary line.

In the anatomical position, the ligamentum arteriosum is ___________ to the T-4 - T-5 intervertebral disc. -anterior -superior -posterior -medial -lateral

the answer is anterior Description: The ligamentum arteriosum is between the pulmonary artery and arch of the aorta. It is at the level of T4-T5, and it is anterior to the intervertebral disc.

A section through the thoracic cavity in which you could see the vertebral column enclosing the spinal cord, the sternum, the heart and both lungs would be in which of the following planes? -sagittal -parasaggital -coronal (frontal) -horizontal (transverse)

the answer is horizontal (transverse) Description: A horizontal or transverse plane would include anterior, posterior, and lateral structures at the same level. For example, a transverse section through the T5 vertebrae would show the vertebrae posteriorly, sternum anteriorly, the heart of the mediastinum, and the lungs laterally.

The clinical picture of "winged" scapula is a result of: A-weak rotator cuff muscles B-paralyzed serratus anterior muscle C-paralyzed middle portion of the trapezius muscle D-weak shoulder adductors E-paralyzed shoulder abductors

the answer is paralyzed serratus anterior muscle because :Paralysis of the serratus anterior muscle, e.g. by a lesion to the long thoracic nerve, will result in an ipsilateral winged scapula.

Which of the following innervates the internal intercostal muscle of the 7th intercostal space? -the dorsal ramus of T-7 -the ventral ramus of T-7 -the anterior cutaneous branch of the 7th intercostal nerve -intercostal nerve T-8 -cervical spinal nerves 3,4 and 5

the ventral ramus of T-7

A 31 year-old Anatomist is tripped by a 1st term hacker while playing soccer and falls, fracturing the medial epicondyle of his right humerus. Which one of the following would most likely be injured? A-axillary nerve B-musculocutaneous nerve C-anterior interosseous nerve D-radial artery E-ulnar nerve

ulnar nerve The ulnar nerve passes around the medial epicondyle of the humerus ("funny bone") and would be at risk in this scenario.