BIOL 121 - Quiz B UPDATED ACTUAL
Exam Questions and CORRECT Answers
Non-specific (innate) - CORRECT ANSWER - general defences/ attack on all antigens.
Inborn.
first and second line.
specific (acquired or adaptive) - CORRECT ANSWER - specialised/ targeted defence
against one top of antigen.
acquired during life.
third line.
First line defences - CORRECT ANSWER - non-specific
1. physical/ mechanical defence - skin
2. chemical defence - lysozyme
3. biological defences - normal flora
chain of infection - CORRECT ANSWER - 1. infectious agents - fungi
2. reservoirs - people
3. portal of exit - skin
4. means of transmission - airborne
5. portal of entry- GI tract
6. susceptible host - surgury
Third line defences - CORRECT ANSWER - develops on exposure to a particular antigen
antigens from microbes, "wrong" cells
uses B and T lymphocytes made in bone marrow
, axon - CORRECT ANSWER - threadlike part of the nerve cell along which inputs are
conducted from the cell body to other cells
Dendrite - CORRECT ANSWER - short branch of nerve cell, along which impulses
received form other cells at synapse are transmitted to the cell body
hypertonic - CORRECT ANSWER - high concentration inside the cell, low concentration
outside
hypotonic - CORRECT ANSWER - low concentration inside and higher outside
isotonic - CORRECT ANSWER - same concertation on both sides
sensory neurons - CORRECT ANSWER - transmits impulses towards the CNS for
processing
motor neurons - CORRECT ANSWER - carry impulses form the CNS to effectors for
actions
B cells - CORRECT ANSWER - found in the bones and matures in the bones
T cells - CORRECT ANSWER - found in the bones and matures in the thymus
somatic nervous system (PNS) - CORRECT ANSWER - controls skeletal muscle control.
voluntary contractions are under contractions are under conscious control.
involuntary contractions are subconscious (reflex).
autonomic nervous system (ANS) - CORRECT ANSWER - AKA visceral motor system.
Exam Questions and CORRECT Answers
Non-specific (innate) - CORRECT ANSWER - general defences/ attack on all antigens.
Inborn.
first and second line.
specific (acquired or adaptive) - CORRECT ANSWER - specialised/ targeted defence
against one top of antigen.
acquired during life.
third line.
First line defences - CORRECT ANSWER - non-specific
1. physical/ mechanical defence - skin
2. chemical defence - lysozyme
3. biological defences - normal flora
chain of infection - CORRECT ANSWER - 1. infectious agents - fungi
2. reservoirs - people
3. portal of exit - skin
4. means of transmission - airborne
5. portal of entry- GI tract
6. susceptible host - surgury
Third line defences - CORRECT ANSWER - develops on exposure to a particular antigen
antigens from microbes, "wrong" cells
uses B and T lymphocytes made in bone marrow
, axon - CORRECT ANSWER - threadlike part of the nerve cell along which inputs are
conducted from the cell body to other cells
Dendrite - CORRECT ANSWER - short branch of nerve cell, along which impulses
received form other cells at synapse are transmitted to the cell body
hypertonic - CORRECT ANSWER - high concentration inside the cell, low concentration
outside
hypotonic - CORRECT ANSWER - low concentration inside and higher outside
isotonic - CORRECT ANSWER - same concertation on both sides
sensory neurons - CORRECT ANSWER - transmits impulses towards the CNS for
processing
motor neurons - CORRECT ANSWER - carry impulses form the CNS to effectors for
actions
B cells - CORRECT ANSWER - found in the bones and matures in the bones
T cells - CORRECT ANSWER - found in the bones and matures in the thymus
somatic nervous system (PNS) - CORRECT ANSWER - controls skeletal muscle control.
voluntary contractions are under contractions are under conscious control.
involuntary contractions are subconscious (reflex).
autonomic nervous system (ANS) - CORRECT ANSWER - AKA visceral motor system.
