Question

Which of the following statements are true about the layers of GI tract?

i. The lamina propria is a thin layer of dense irregular connective tissue, while the submucosa is a moderately loose irregular connective tissue

ii. The mucosa consists of three layers: muscularis mucosa, lamina propria and epithelium.

iii. The submucosa contains nervous tissue and blood vessels

iv. The muscularis externa consists of two layers of smooth muscle: an inner longitudinal and outer circular layer

v. The adventitia is formed by a layer of simple squamous epithelium

A. i, ii, iii, iv

B. ii, iii, iv

C. ii, iii

D. i, ii, iii

2. Which of the following CORRECTLY lists the progression of the brachial plexus starting from the spinal cord and going distally?

A. Group of answer choices

B. Roots, Trunks, Divisions, Cords

C. Anterior horn, Posterior horn, Cords, Divisions

D. Roots, Trunks, Cords, Divisions

E. Cords, Divisions, Trunks, Roots

3. You are a stretch therapist and you are only told the following information by the PT: “Horizontal abduction (motion on the transverse plane away from the median plane) of the humerus combined with external rotation and shoulder extension with a neutral wrist.”

A. pectoralis major

B. serratus anterior

C. biceps brachii

D. posterior deltoid

Answer 1

1. Option C is true.

ii. The mucosa consists of three layers: muscularis mucosa, lamina propria and epithelium.

iii. The submucosa contains nervous tissue and blood vessels

Mucosa has three layers as mentioned above and submucosa contains nerve plexus

Statement iv appears to be correct but the inner layer is circular and the outer layer is longitudinal.

2. The correct pathway is root, trunks, division, cords. The plexus start from the spinal cord through root then it divides into trunks, then to do ision and cords.

3. It's the posterior deltoid.

This muscle is affected with this motion as wrists are neutral and no movement in the elbow the biceps branchii is not affected. Pectoralis major is a chest muscle and serratus anterior is the muscle present at the sides of the ribs has nothing to do with this motion.