0
levoversion (looking left) involves:
- left lateral rectus
- right medial rectus
This is called conjugate movement (the eyes move in the same direction). Eye muscles work together with other eye muscles, of the same eye and the opposite eye, to move both eyes together in various directions. These are known as yoked eye movements.
What else can I help you with?
What extrinsic eye muscles are controlled during the convergence reflex?
The medial rectus muscles are primarily responsible for the convergence reflex. When focusing on a near object, these muscles contract to rotate both eyes inward, allowing them to converge and maintain single binocular vision.
How is a cytoskeleton like your muscles?
Both the cytoskeleton and muscles provide structure and support to cells and tissues. They are composed of protein fibers that can contract and generate force. Additionally, they both play a role in cell movement and maintaining cell shape.
What are two involuntary muscles?
Two examples of involuntary muscles are smooth muscle and cardiac muscle. Smooth muscle is found in organs such as the stomach and intestines, while cardiac muscle is found in the heart. Both types of muscles contract without conscious effort.
What are the muscles called that cross two joints and act on both joints?
Muscles that cross two joints and act on both joints are called biarticular muscles. These muscles can generate movement at both joints they cross, which can have implications for muscle function and coordination during activities involving those joints.
What are flexible and expand in the body?
Joints are flexible structures in the body that allow for movement, while muscles can expand and contract to produce movement. Together, joints and muscles work in harmony to provide flexibility and enable various types of physical activity. Stretching exercises can help improve both flexibility and muscle expansion in the body.
How do you flex?
Contract the muscles on both sides of a joint. For example, contract both your tricep and your bicep.
How is cardiac muscles similar to smooth muscles?
they both contract and relax to cause movement and both are uninucleated.
What extrinsic eye muscles are controlled during the convergence reflex?
The medial rectus muscles are primarily responsible for the convergence reflex. When focusing on a near object, these muscles contract to rotate both eyes inward, allowing them to converge and maintain single binocular vision.
Do all muscles must contrast for movement?
No, not all muscles must contract for movement. While many movements involve the contraction of muscles to create force, some movements can occur through the relaxation of certain muscles, allowing opposing muscles to contract. For example, when bending the arm, the biceps contract while the triceps relax. Therefore, coordinated muscle action, including both contraction and relaxation, is essential for smooth movements.
What qualities do cardiac and skeletal muscles share?
Cardiac and skeletal muscles are both striated muscles that contract in response to nerve impulses. They contain sarcomeres as their basic contractile unit and rely on the presence of calcium ions for muscle contraction. Additionally, both types of muscles are composed of muscle fibers that vary in size and length.
What muscle is contracted to exhale forcibly?
Diaphragm & interna intercostal muscle
How do opposing pairs of muscles behave during movement?
When one is contracting, the opposing muscle is relaxing.
Does the sternocleidomastoid rotate to same side?
The sternocleidomastoid muscle primarily rotates the head to the opposite side. When one side of the sternocleidomastoid contracts, it causes rotation of the head towards the opposite side while also tilting it to the same side. However, if both sides contract together, they flex the neck forward. Thus, the muscle does not rotate the head to the same side; that action is performed by other muscles.
Why do we need both muscles and bones to move our body?
one muscle to contract and the other muscle to retract
What attaches muscles to bones and other muscles.?
Tendons are the structures that attach muscles to bones, allowing for movement when muscles contract. Additionally, fascia, a type of connective tissue, can connect muscles to other muscles, providing support and allowing for coordinated movement. Both tendons and fascia play essential roles in the musculoskeletal system.
What organ has involuntary and striated muscles?
The heart as both involuntary and striated muscles. The striations are similar skeletal muscles. Heart muscles are involuntary like the muscles seen in the digestive tract, called smooth muscle.
How is a cytoskeleton like your muscles?
Both the cytoskeleton and muscles provide structure and support to cells and tissues. They are composed of protein fibers that can contract and generate force. Additionally, they both play a role in cell movement and maintaining cell shape.
