The corticospinal system
a. consists of fibers originating in the primary motor cortex and terminating on motor neurons
b. involves the motor regions of the cortex, cerebellum, basal nuclei, and thalamus
c. is primarily concerned with regulation of body posture
d. has characteristics a and b
e. has characteristics b and c
A
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Match the following:
A) Osteoblasts B) Osteoclasts C) Endosteum D) Lamellae E) Canaliculi 1) The lining of the marrow cavity. 2) Cells that can dissolve the bony matrix. 3) Layers of bone matrix. 4) Small channels that radiate through the matrix of bone. 5) Cells that can build bony matrix.
The plasma membrane is referred to as a mosaic because of the presence of ________.
stationary proteins in a uniform arrangement carbohydrates in changing patterns phospholipids that are in constant motion moving proteins in a random arrangement
Which of the following organic groups does hemoglobin belong to?
A. nucleic acid B. vitamin C. lipid D. protein E. carbohydrate
The short connection between a spinal nerve and a sympathetic chain ganglion through which preganglionic neurons pass is called the ________.
A. white ramus communicans B. pink ramus communicans C. splanchnic nerve D. gray ramus communicans E. terminal ganglia