Tendons
What does the tendon do
fibrous connective tissue that attaches muscle to a bone.
this is the general term for the process where muscles shorten and generate force.
what is contraction?
What are the three main types of muscle tissue, and where are they located in the body?
skeletal muscle, smooth muscle, and cardiac muscle
Explain the sliding filament theory of muscle contraction.
Muscle contraction occurs as thin (actin) filaments slide past thick (myosin) filaments, shortening the sarcomere.
What are the major functions of the skeletal muscle system?
The skeletal muscle system works in conjunction with the skeletal system to produce movement.
How are tendons different from ligaments
Tendons connect muscle to bone
Ligaments connect bones to other bones
this term describes the movement of a limb away from the midline of the body.
what is abduction?
Which type of muscle tissue is characterized by striated fibers and voluntary control?
skeletal muscle
What is the role of ATP in muscle contraction and relaxation?
ATP provides energy for myosin heads to bind to actin and pull, and also for breaking the bond between actin and myosin for relaxation.
Explain the difference between the origin and insertion of a skeletal muscle.
Origin is the fixed attachment point; insertion is the movable attachment point.
What causes a tendon to tear
Direct impact such as a fall or blow, or wear and tear over time
this is the motion of pulling the toes closer to the shin
what is dorsiflexion?
What are the key structural and functional differences between skeletal, smooth, and cardiac muscle?
Skeletal muscle is for voluntary movement. Smooth muscle is for involuntary movement in organs. Cardiac muscle, found in the heart, is for involuntary pumping of blood.
Describe the function of the neuromuscular junction.
The neuromuscular junction is where a motor neuron communicates with a muscle fiber, releasing acetylcholine to initiate muscle contraction.
What are the different types of muscle actions, ex) flexion, extension, abduction, adduction. explain all.
Flexion: Decreases joint angle
Extension: Increases joint angle
Abduction: Moves limb away from midline
Adduction: Moves limb toward midline
What does the patellar tendon do
connects the bottom of the knee cap(Patella) to the top of the shinbone (Tibia)
turning the palm of your hand downward is known as this.
what is pronation
Which type of muscle tissue is responsible for peristalsis in the digestive system
Smooth muscle is responsible for peristalsis in the digestive system.
What is the role of calcium ions in the process of muscle contraction?
Calcium ions bind to troponin, exposing actin binding sites for myosin, which initiates the sliding filament mechanism.
Describe the role of tendons in the skeletal muscle system.
Tendons connect muscles to bones.
Define the Achilles Tendon
It connects the gastrocnemius and the soleus(calf muscles) to the calcaneus(heel bone)
doing jumping jacks involves repeated movements of these two actions regarding the limbs.
abduction & adduction
What is the function of intercalated discs in cardiac muscle?
Intercalated discs enable cardiac muscle cells to work together as a unified functional unit (a syncytium), ensuring efficient and coordinated heart contractions.
What are the differences between isometric, isotonic, and isokinetic contractions?
Isometric is contraction with no change in muscle length, isotonic is contraction with a change in muscle length, and isokinetic is contraction at a constant speed.
How do skeletal muscles work in pairs to produce movement?
One muscle contracts while the other relaxes.