The spinous process has a bifid tip in most ________ vertebrae.
A. coccygeal
B. thoracic
C. cervical
D. lumbar
E. sacral
Answer: C
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An exaggerated curvature of this region of the vertebral column causes lordosis
A) thoracic B) cervical C) sacral D) lumbar
What connects the upper motor neurons to lower motor neurons?
A) sensory neurons B) muscle fibers C) interneurons D) primary afferent neuron
Which organelle modifies, sorts, and packages proteins and lipids for export from the cell?
A) endoplasmic reticulum B) Golgi apparatus C) mitochondrion D) cytoskeleton
Define transverse tubules
A) Transverse tubules forms a tubular network around each individual myofibril and is similar to the smooth endoplasmic reticulum of other cells. B) Transverse tubules are composed primarily of actin filaments. C) Transverse tubules are composed primarily of myosin filaments. D) Transverse tubules are tubular extensions of the sarcolemma that extend deep into the sarcoplasm contacting the terminal cisternae of the sarcoplasmic reticulum. E) Transverse tubules are tubular proteins that bind calcium within the sarcomeres.