Chromatophilic substance, found within the cell bodies of neurons, is involved in the metabolic activities of the cell and is composed of ________
A) cytoskeletal elements B) lysosomes
C) mitochondria D) rough endoplasmic reticulum
Answer: D
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Put the following events of the contraction cycle in the order in which they occur.
1. Cross-bridge detachment 2. Cross-bridge formation 3. Active site exposure 4. Myosin reactivation 5. Calcium ions bind troponin 6. Myosin head pivoting
The site of Ca2+ storage in muscle cells is the lateral sacs of the transverse tubules.
Answer the following statement true (T) or false (F)
The medullary cavity contains
A. red marrow. B. spongy bone. C. the periosteum. D. yellow marrow.
Which of the following is a dural septum, described as a large sickle-shaped fold that dips into the longitudinal fissure between the cerebral hemispheres?
A) tentorium cerebelli B) corpus callosum C) falx cerebelli D) falx cerebri