Which of these muscles is not responsible for flexion or extension of the arm?
The humerus-ulna joint at the elbow is a hinge joint. This type of joint allows for flexion and extension movements, enabling the forearm to bend and straighten relative to the upper arm. The structure of the joint provides stability and allows for a wide range of motion in these two primary directions.
The arm can perform a variety of movements, including flexion and extension at the elbow, allowing it to bend and straighten. It can also move in a circular motion due to shoulder rotation, enabling actions like waving or throwing. Additionally, the arm can perform abduction and adduction, moving away from and toward the body, respectively. These movements are facilitated by various muscles and joints working together.
Muscle
A ball and socket joint is not classified as a lever; rather, it is a type of synovial joint that allows for a wide range of motion in multiple directions. The structure consists of a spherical head of one bone fitting into a cup-like socket of another, enabling movements such as rotation, flexion, and extension. Examples include the hip and shoulder joints, which provide significant mobility and flexibility in the body.
Muscle Tissue
Smooth muscle is responsible for the contraction that moves limbs.
The heart itself is a muscle, however the heart all is made up of different muscles. The muscle knows as the MYOCARDIUM makes up the largest portion of the Heart Wall. The myocardium is made up of the cardiac muscle tissue, which is responsible for the pumping action.
arrector pillis thats a funny name lol
extension
Bending a joint is a flexion movement. It decreases the angle between two body parts (such as the thigh and calf at the knee joint).
The knee joint is a hinge joint that allows for flexion and extension of the leg. It is formed by the articulation between the femur (thigh bone) and tibia (shin bone), as well as the patella (kneecap).
The psoas major is a skeletal muscle tissue. It is a long, thick muscle located in the lower back and is part of the iliopsoas group, which helps in hip flexion and stabilizing the spine. The muscle is essential for various movements, including walking, running, and standing up from a seated position. It is innervated by the lumbar plexus and plays a crucial role in posture and core stability.
the cardiac muscle
biceps is a kind of muscle, rib is a kind of bone.
Voluntary Smooth Muscle
smooth muscle.
The heart is a cardiac muscle