biceps femoris

References

Images

Illustration of the human muscular system from a side view, showing detailed muscles throughout the body with labels identifying major muscles in the head, torso, arms, and legs.

Anatomical illustration of a cat in side view with its trunk and limb muscles exposed and labeled, showing major muscle groups such as trapezius, latissimus dorsi, gluteus, and biceps femoris.

Posterior anatomical illustration of the human muscular system showing major back, arm, and leg muscles labeled, including trapezius, latissimus dorsi, gluteus maximus, and gastrocnemius.

Diagram showing the knee jerk reflex: a reflex hammer strikes the patellar tendon below the knee, activating a stretch receptor in the quadriceps muscle. This sends a signal through a sensory neuron to the spinal cord, where it connects to a motor neuron. The motor neuron then signals the muscle to contract, causing the lower leg to kick forward. The diagram also illustrates the pathway of sensory and motor neurons and their connection in the spinal cord.

biceps femoris: Media

anatomy

Images

Illustration of the human muscular system from a side view, showing detailed muscles throughout the body with labels identifying major muscles in the head, torso, arms, and legs.

Human muscular system

Lateral view of the human muscular system.

Encyclopædia Britannica, Inc.

Anatomical illustration of a cat in side view with its trunk and limb muscles exposed and labeled, showing major muscle groups such as trapezius, latissimus dorsi, gluteus, and biceps femoris.

trunk musculature: cat

Lateral view of the trunk musculature of a cat.

Encyclopædia Britannica, Inc.

Posterior anatomical illustration of the human muscular system showing major back, arm, and leg muscles labeled, including trapezius, latissimus dorsi, gluteus maximus, and gastrocnemius.

human muscular system: posterior view

Posterior view of human muscular system.

Encyclopædia Britannica, Inc.

Diagram showing the knee jerk reflex: a reflex hammer strikes the patellar tendon below the knee, activating a stretch receptor in the quadriceps muscle. This sends a signal through a sensory neuron to the spinal cord, where it connects to a motor neuron. The motor neuron then signals the muscle to contract, causing the lower leg to kick forward. The diagram also illustrates the pathway of sensory and motor neurons and their connection in the spinal cord.

knee-jerk reflex

Knee-jerk reflex and motor-neuron connection.

Encyclopædia Britannica, Inc.