Anatomy Paper Sample: Muscle Lab Work Sheet

The aim of this paper is to discuss about the various muscles found in the human body and the specific functions performed by each muscle.

Is your time best spent reading someone else’s essay? Get a 100% original essay FROM A CERTIFIED WRITER!

Save 25%

Posterior Muscles

Which muscle is the predominant muscle of the posterior arm and responsible for extension of the elbow joint?

Triceps brachii is the muscle which is predominant in the posterior compartment of the arm and is responsible for extension of the elbow joint.

What does the name extensor carpi radialis longus imply about this muscles action and distal attachment?

The name extensor carpi radialis longus implies about this muscles action and actual attachment that it is attached to the second metacarpal bone base and is an extensor at the wrist joint.

Deep Anterior Muscles

What is a retinaculum?

A retinaculum is any region of the body where groups of tendons from different muscles in one compartment are bound under one connective tissue band.

From its name, what can you deduce about the action of the flexor digitorium profundus?

From its name, it can be deduced that the action of the flexor digitorum profundus is flexing the fingers with its location in the forearm.

Pronator quadratus is the prime mover for forearm pronation. What is the definition of prime mover?

Pronator quadratus is the primary mover for forearm pronation; the definition of a prime mover is a muscle that is primarily considered responsible for the generation of a particular movement in the anterior region of the arm.

Superficial Muscle

What is the derivation of linea alba?

The derivation of linea alba is a white aponeurosis in the anterior superficial abdomen that ensures close apposition of anterior muscles of the trunk. Furthermore, linea alba separates the right and left abdominis muscles.

Deep Muscles Lab

What is the function of linea alba?

The primal function of linea alba is separating the left and right abdominis muscles.

What is the derivation of intercostals?

The derivation of intercostals is between the ribs of a human being or an animal.

What is the main function of external intercostals muscles?

The principal function of external intercostals muscles is superior elevation of the ribs and expanding the chest cavity to facilitate forced and quiet inhalation of air.

How does the function of internal intercostals muscles differ from that of the external intercostals muscles?

The function of the internal intercostals muscles differs from that of the external intercostals muscles in that internal intercostals muscles are responsible for forced exhalation while the external intercostals muscles are responsible for forced inhalation.

Anterior Muscles

Which muscle lies just lateral to the psoas major muscle in the iliac fossa in this view?

The muscular component which lies just lateral to the psoas major muscle in the iliac fossa in this view is quadratus lumborum.

What is the function of psoas major and iliacus muscles?

The function of the psoas major and iliacus muscles is lateral rotation (supination) and flexion of the thigh.

What is the function of pectineus muscle?

The function of pectineus muscle is flexion of the hip.

Deep Muscles

Which 4 muscles make up the quadriceps muscles of the thigh?

The four muscles which make up the quadriceps muscles of the thigh are vastus medialis, vastus lateralis, rectus femoris, and vastus intermedius.

Which 3 structures form the outer bounds of the femoral triangle?

The three structures which form up the outer bounds of the femoral triangle are inguinal ligament (superiorly), sartorius muscle (laterally), and adductor longus muscle (medially).

Which muscle is the longest in the human body?

The longest muscle in the human body is sartorius muscle.

Which two superficial anterior thigh muscles are missing in this view?

The two superficial anterior thigh muscles which are missing in this image are vastus lateralis and vastus intermedius.