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Stack #4543853
| Question | Answer |
|---|---|
| soleus muscle | is a muscle in the lower leg, under the calf (gastrocnemius). It connects the shin bones to the heel through the Achilles tendon. Its main job is to point the toes downward (plantarflex the foot), which helps us stand, walk, and run. |
| Carpal tunnel syndrome | when a nerve in your wrist, called the median nerve, gets squeezed. This can make your hand or fingers feel tingly, numb, or weak. It often happens from repeating the same hand movements, like typing or using a mouse. |
| motor unit | is made up of one motor neuron (a nerve cell that controls muscles) and all the muscle fibers it connects to. When the motor neuron sends a signal, all the muscle fibers in that unit contract together, allowing the body to produce movement. |
| contraction | when a muscle tightens or shortens to produce movement or maintain tension. This happens when the muscle fibers get signals from nerves, causing them to pull on bones or other tissues. |
| Catabolic pathways | the processes in the body that break down large molecules into smaller ones to release energy. F |
| peripheral disorder | a condition that affects the peripheral nervous system (PNS)—the nerves outside the brain and spinal cord. These disorders can cause weakness, numbness, tingling, or pain in the arms, legs, or other parts of the body. |
| myelin disorder | a condition that damages the myelin sheath, the protective covering around nerves that helps electrical signals travel quickly. When myelin is damaged, nerve signals slow down or get blocked, leading to problems with movement, sensation, or coordination. |
| axon | a long, thin part of a neuron (nerve cell) that carries electrical signals away from the cell body to other neurons, muscles, or glands. It acts like a communication cable |
| Dendrites | branch-like extensions of a neuron that receive signals from other neurons and carry them toward the cell body. They act like the neuron’s “antennae,” picking up messages from other nerve cells so the neuron can process and respond to them. |
| Nucleus | part of a cell that controls its activities and stores its genetic material (DNA). In neurons, the nucleus is located in the cell body and directs cell growth, protein production, and overall function. It’s like the cell’s control center. |