Question

____ 28. Which of the following drugs does NOT directly affect the nervous system?
a. caffeine
b. antibiotic
c. cocaine
____ 29. A doctor injects a patient that has been infected with hepatitis A with hepatitis A antibodies, thereby giving the
patient _____ immunity.
a. active
b. non-specific
c. passive
____ 30. Which of the following is always an effect of external respiration?
a. an increase in carbon dioxide levels in the blood
b. a decrease in carbon dioxide levels in the blood
c. a decrease in the oxygen levels in the blood
____ 31. Epithelial cells are similar to the shingles of a roof in that they are both flat and overlap. How does this
structure aid in their function?
a. It allows the individual cells to shed more easily.
b. It allows the whole structure of the skin to be lightweight.
c. It allows them to form a barrier to the outside.
____ 32. Which of the following describes functions of the peripheral nervous system?
a. integrates perception, movement, and intellect
b. transmits external stimuli and motor responses
c. regulates body temperature, thirst, and appetite
____ 33. During which phase do the cells of the follicle develop into the corpus luteum?
a. luteal phase
b. follicular phase
c. flow phase
____ 34. _______ receive the signals called impulses from other neurons and conduct the impulses to the cell body.
a. Axons
b. Dendrites
c. Neurons
____ 35. A 15 year-old would be in the major phase of development called
a. adulthood
b. adolescence
c. childhood
____ 36. Vomiting is often accompanied by a burning sensation in the throat. What is the most likely cause of this?
a. acid from the stomach
b. amylase in the mouth
c. peristalsis in the small intestine

Answer 1

28.B

Antibiotic does not directly affect the central nervous system. They can produce adverse effect on the central nervous system as in epilepsy and convulsions resulting from enhanced neuronal excitability by the suppression of inhibitory garba synapses.

Caffeine directly act on central nervous system as a stimulant. After reaching the brain main it causes and alertness. This will result a feeling of more awake and less tired. Hence it is included in medications to treat the headaches and migraine.

Cocaines mainly affects central nervous system as the primary target. Cocaine blocks the reuptake of neurotransmitters in the neuronal synapses. This causes Euphoria and  pharmacological pleasure.Its effect on central nervous system account for the majority of the complications associated with the cocaine abuse.

29.C

injecting the antibody directly into the human body is a type of passive immunity which can be provided by injection of immunoglobulins containing antibodies against the target infection.it increases the antibody level to the specific infection and protect the body against that pathogen.

30.B

External respiration is exchange of Oxygen and Carbon dioxide that occurs inside the lung alveoli through the process of respiration.thereby decreasing the level of carbon dioxide in the blood and increasing the level of oxygen in the blood.

31.B

In shingles. the formation of blisters or erosions of epithelial cells which is elevated from the the underlined dermis and causes the easy scrapable superficial layer of skin.

32.C

Peripheral nervous system is responsible for integration of perceptions,movement and intellect. It has also role in transmitting the external stimuli and motor responses.

Hypothalamus is responsible for the regulation of homeostasis and thirst hunger body temperature water balance and blood pressure.It also links The nervous system to the endocrine system. The midbrain and pons are also a part of brain.

33.A

The four phases of the menstrual cycle are menstruation, follicular phase, ovulation and the luteal phase.
The Corpus luteum develops from the cells of ovarian follicle during luteal phase of menstrual cycle.This phase is preceded by the release of secondary oocyte from the follicle during ovulation.

The follicular phase, also known as the proliferative phase, is the phase of the estrous cycle during which follicles in the ovary mature. It ends with ovulation.

34.B

Dendrites are thread like cytoplasmic extension of the cell body of a neurone.The dendrites receive signals from the neighbouring neurones and conduct it to the cell body.
The axons are responsible for further transmission of the impulse from the cell body to the distal terminal of neuron.

35.B

Adolescence is a transitional phase of growth and development between the childhood and it is the age between 10 and 19 years old.
Childhood is the phase of growth and development of human in between three years and 12 years.adulthood is a period in human life span in which the intellectual and physical maturity will attain. It commonly begins from 21 years old.

36.A

During vomiting there will be a leaky muscle between stomach and oesophagus which allows acid to rise up from the stomach through the oesophagus into the throat and it creates a burning sensation in the back of the throat, also gives a sour or bitter taste in the throat.