The electron microscope has revealed that one of the components within the cell consists of microtubules arranged to form a hollow tube. This structure is a ________.
A) centrosome
B) centriole
C) chromosome
D) ribosome
B) centriole
Anatomy & Physiology
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Birds, fish, and some reptiles are __________ layers
Fill in the blank(s) with correct word
Anatomy & Physiology
Platelets
a. are small cell fragments derived from large megakaryocytes in the bone marrow b. lack nuclei c. contain high concentrations of actin and myosin, which enable them to contract d. have all of the above characteristics e. have only characteristics a and b
Anatomy & Physiology
The gray matter on either side of the spinal cord is subdivided into anterior, lateral and posterior
A) columns. B) horns. C) funiculi. D) fasciculi.
Anatomy & Physiology
Which leukocyte increases in number during parasitic infections?
A) Eosinophil B) Neutrophil C) Basophil D) Lymphocyte
Anatomy & Physiology