Muscle Anatomy and Functions Assessment

The video tutorial reviews the muscle practical exam for an honors anatomy class, focusing on various muscles in animals. It covers the masseter muscle for mastication, neck muscles like the sterno mastoid, chest muscles such as the pectoralis, abdominal muscles including the obliques and rectus abdominis, thigh muscles like the gracilis and quadriceps, and back and arm muscles such as the trapezius and deltoids. The tutorial provides a detailed examination of each muscle's location, function, and anatomical differences between species.

Which muscle is responsible for closing the jaw during mastication?

• Pectoralis Major

• Masseter

• Biceps Brachii

• Sternomastoid

In cats, which pectoralis muscle is larger compared to humans?

• Pectoralis Major

• Pectoralis Minor

• Serratus Ventralis

• Intercostals

What is the role of the intercostal muscles?

• Flex the elbow

• Assist in breathing

• Rotate the shoulder

• Extend the knee

What is the function of the biceps brachii?

• Flexes the elbow

• Extends the elbow

• Rotates the shoulder

• Adducts the arm

Which muscle is located on the posterior part of the upper arm and extends the elbow?

• Biceps Brachii

• Triceps Brachii

• Deltoid

• Brachialis

Which muscle group is responsible for extending the knee?

• Hamstrings

• Quadriceps

• Adductors

• Sartorius

Which muscle is more medial in the thigh, the gracilis or the Sartorius?

• Quadriceps

• Gracilis

• Sartorius

• Hamstrings

What is the primary action of the tibialis anterior muscle?

• Dorsiflexes the foot

• Flexes the knee

• Extends the hip

• Plantarflexes the foot

Which muscle group is antagonistic to the tibialis anterior?

• Gastrocnemius and Soleus

• Quadriceps

• Hamstrings

• Deltoids

What is the function of the latissimus dorsi?

• Flexes the elbow

• Retracts the arm

• Extends the knee

• Adducts the thigh