Red bone marrow contains a high amount of ________
A) stem cells that produce blood cells
B) fat
C) elastic tissue
D) cartilage
A
Explanation:
B) Yellow bone marrow has a high amount of fat.
C) Elastic tissue is not found in red bone marrow.
D) Cartilage is not found in red bone marrow.
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Answer the following statements true (T) or false (F)
1. Reflexes are rapid, automatic responses to stimuli. 2. Efferent nerve fibers may be described as motor nerve fibers. 3. Cell bodies of sensory neurons may be located in ganglia lying outside the central nervous system. 4. Myelination of the nerve fibers in the central nervous system is the job of the oligodendrocyte. 5. During depolarization, the inside of the neuron's membrane becomes less negative.
Which of the following is not true of hemoglobin?
A. It makes up about 1/3 of a red blood cell. B. Each hemoglobin molecule consists of 4 protein subunits. C. Each hemoglobin molecule can bind to up to 20 oxygen molecules at a time. D. Oxyhemoglobin is bright red, and deoxyhemoglobin is dark red. E. All of these are true of hemoglobin.
The portion of hipbone a person sits on is the
A. iliac fossa. B. symphysis pubis. C. sacroiliac joint. D. ischial tuberosity. E. anterior superior iliac spine.
Growth due to an increase in cell number is called ________.
A. hyperplasia B. atrophy C. dystrophy D. hypertrophy