4.4 A&P

Front

What is the function of the semitendinosus muscle?

Back

The semitendinosus muscle is one of the hamstring muscles located at the back of the thigh. Its primary functions are to flex the knee and extend the hip.

Front

Where is the gastrocnemius muscle located?

Back

The gastrocnemius muscle is located in the calf of the leg. It is the largest muscle in the calf and is responsible for plantar flexing the foot and flexing the knee.

Front

What is the role of the soleus muscle?

Back

The soleus muscle is located beneath the gastrocnemius in the calf. It primarily functions to plantar flex the foot at the ankle joint.

Front

What is the origin of the fibularis longus muscle?

Back

The fibularis longus muscle originates from the head and upper two-thirds of the lateral surface of the fibula.

Front

What movements does the sartorius muscle facilitate?

Back

The sartorius muscle, the longest muscle in the human body, facilitates flexion, abduction, and lateral rotation of the hip, as well as flexion of the knee.

Front

What are the primary actions of the hamstring group?

Back

The primary actions of the hamstring group (including the semitendinosus, semimembranosus, and biceps femoris) are to flex the knee and extend the hip.

Front

How does the gastrocnemius contribute to walking?

Back

The gastrocnemius muscle contributes to walking by allowing for push-off during the toe-off phase, providing propulsion.

Front

What is the relationship between the soleus and gastrocnemius muscles?

Back

The soleus and gastrocnemius muscles work together to perform plantar flexion of the foot, but the soleus is more active during standing and walking.

Front

What is the innervation of the fibularis longus muscle?

Back

The fibularis longus muscle is innervated by the superficial fibular nerve.

Front

What is the significance of the sartorius muscle in human movement?

Back

The sartorius muscle is significant in human movement as it allows for complex movements such as crossing the legs and helps in flexing the hip and knee.