80. A Somaiic Selnsoly noun 81. Which part of the meninges is made of a delicate

Question

80. A Somaiic Selnsoly noun 81. Which part of the meninges is made of a delicate web like connective tissue? 82. Concerning the blood brain barrier, substances greater than 83. Which of the following is involved in the blood brain barrier? 84. a. True a. Dura mater b. Arachnoid cannot cross this barrier. b. False c. Pia mater d. Both a and b e. All of the above Daltons generally c. 300 a. 100 a. Astrocytes b. Ependymal cells c. Oligodendrocytes d. Microglia e. Schwann cells matter. Theses cells have fewer processes, and they are relatively straight. b. 200 d. 350 e. None of the Above are more common in the inner core of the brain called the white c. Glial limitans a. Fibrous astrocytes b. Protoplasmic astrocytes a. True b. False a. True b. False a. non-myelinated nerves b. myelinated nerves d. None of the Above 85. Electrical impulses are not transmitted thru myelinated axons by action potentials. 86. Saltatory conduction is how action potentials travel via myelinated nerves? 87. Which type of nerve allows for the faster transmission of action potentials thru nerves? c. None of the Above Chapter #13: Cardiovascular 88. The cardiovascular system includes: b. the blood vessels a. the heart d. the heart, the blood vessels the lymphatic vessels c. the lymphatic vessels e. None of the Above 89. Arteries are the vessels that deliver blood to the capillaries. a. True b. False

Explanation / Answer

81. Arachnoid is made up of the delicate web-like connective tissue in menings.

82. The substance that cannot cross the blood-brain barrier will be less than 500 daltons.

83. The blood-brain barrier includes astrocytes.

84. Fibrous astrocytes are straight processes that are found in white matter.

85. Electrical impulses are not transmitted thru myelinated axons by action potentials. False.

86. Saltatory conduction is how action potential travel by myelinated nerves. True.(from one node of Ranvier to other).

87. Myelinated nerves allow faster transmission of the action potential.( axon of the neuron which is covered by the fatty insulating layer called myelin)

88. The cardiovascular system includes the heart, the blood vessels, and the lymphatic vessels.

89. Arteries are the vessels that deliver blood to the capillaries. False.

Arteries are the vessels that deliver blood to the all body organs.

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