Answer:
Explanation:
The central nervous system (CNS) does not have capacity to repair itself but, the PNS or the peripheral nervous system can repair and regenerate itself. The PNS can regenerate its damaged axon only when its cell body or cyton and its neurilemma are intact. The proximal end of the cyton has growth cones. The axon grows from the cones.
Answer:
The mass of a pendulum's bob does not affect the period. Newton's second law can be used to explain this phenomenon. In F = m a, force is directly proportional to mass. As mass increases, so does the force on the pendulum, but acceleration remains the same.
Explanation:
The correct answer is referred pain.
Referred pain also called reflective pain is pain which<span> is perceived at a location other than the location of the painful stimulus. The size of this pain is related to the intensity and duration of the evoked pain.</span>
T-Tubule -Invaginations of the sarcolemma penetrating deep into the interior of the muscle cell.
Synaptic Cleft -the space between the axon terminal and the motor end plate.
Axon Terminal -the swollen distal end of the motor neuron axon.
Sarcolemma -the muscle cell membrane.
Synaptic Vesicles -structures within the axon terminal that contain the neurotransmitter acetylcholine (ACh).
Terminal Cisternae & Sarcoplasmic Reticulum (SR) -structures within skeletal muscle cells that serve as reservoirs of calcium ions.
Motor End Plate -a folded region of the sarcolemma at the neuromuscular junction.
It would be B. A keystone species. Keystone species play important roles in ecosystems and when they are removed this can make an entire habitat collapse
