Question

15. We use a separate toothpick for each well while doing blood typing to prevent contamination a) True b) False c) Neither d) Answer not given 16. When a person is said to be "+" the refers to a) his/her mental state b) his/her ability to pay your bill c) antibodies in plasma d) the Rhesus factor 17. The layer of the heart responsible for the pumping action is the a) Epicardium b) Myocardium c) Endocardium d) Pericardium 18. A vital link between the brain and the peripheral nervous system concerned with the transmission of nerve impulses is the a) Nervous system b) Central nervous system c) cerebrospinal fluid d) Spinal cord INSRUCTION: Using the figure 2-B, answer the following questions (19-25) 19. periodic gap in the insulating sheath on the axon of certain neurons that serves to facilitate the rapid conduction of nerve impulses. 20. a single rounded structure bounded by a double membrane, containing the genetic material. 21. is a synaptic terminal and has synaptic vesicles that contain neurotransmitter molecules. 22. transmits signals from the cell body to other neurons and extends from the axon hillock. 23. 24 protects and electrically insulates fibers and increases the speed of transmission of nerve impulses. surrounds the nucleus and contains mitochondria, free ribosomes, fixed ribosomes, and Nissl bodies. 25. are the main receptors or input regions and provide an enormous surface area for receiving signals from other neurons

Answer 1

15.a) True :

Because there are chances of contamination of other blood type antigen.

16. d) Rhesus factor:

People without Rh factor are known as Rh negative (Rh-), while people with the Rh factor are Rh positive (Rh+)  

17. b) Myocardium:

The myocardium is the muscular middle layer of the heart wall that contains the cardiac muscle tissue. Myocardium makes up the majority of the thickness and mass of the heart wall and is the part of the heart responsible for pumping blood.

18. d) spinal cord:

The spinal cord is responsible for connecting the peripheral nervous system to the vast signal-processing power of the brain.