#1
In cellular adaptation, hypertrophy is best defined as:
Increase in cell size
ExplanationHypertrophy refers to cells enlarging due to increased workload.
#2
What is the main function of the endocrine system?
Regulation of body functions through hormones
ExplanationEndocrine system controls bodily functions via hormone secretion.
#3
What is the primary function of erythrocytes (red blood cells) in the bloodstream?
Carry oxygen to tissues
ExplanationErythrocytes transport oxygen to tissues throughout the body.
#4
What is the primary function of the respiratory system?
Exchange gases (oxygen and carbon dioxide) with the environment
ExplanationRespiratory system facilitates gas exchange between the body and the environment.
#5
Which of the following conditions is characterized by abnormal accumulation of fluid in the interstitial spaces?
Edema
ExplanationEdema is the abnormal buildup of fluid in interstitial spaces, causing swelling.
#6
What is the primary function of the lymphatic system?
Filter and return tissue fluid to the bloodstream
ExplanationThe lymphatic system filters and returns tissue fluid, aiding in immune function.
#7
Which of the following is a characteristic of chronic inflammation?
Prolonged duration and tissue destruction
ExplanationChronic inflammation persists and damages tissues over time.
#8
What is the primary function of the complement system?
Phagocytosis
ExplanationComplement system aids in immune responses, including phagocytosis.
#9
Which of the following best describes the term 'ischemia'?
Inadequate blood flow to a tissue
ExplanationIschemia results from reduced blood supply to a tissue.
#10
Which of the following is a characteristic feature of autoimmune diseases?
Immune response against own tissues
ExplanationAutoimmune diseases involve the immune system attacking the body's own tissues.
#11
Which of the following is a characteristic of septic shock?
Infection leading to systemic inflammation and organ failure
ExplanationSeptic shock results from systemic infection causing widespread inflammation and organ dysfunction.
#12
What is the primary role of platelets in hemostasis?
Initiate blood clot formation
ExplanationPlatelets are crucial for initiating blood clotting to prevent bleeding.
#13
Which of the following is a hallmark feature of apoptosis?
Nuclear fragmentation
ExplanationApoptosis involves controlled cell death with nuclear fragmentation.
#14
Which of the following is a characteristic of Type 2 hypersensitivity reaction?
Tissue-specific autoimmune
ExplanationType 2 hypersensitivity involves antibodies targeting specific tissues.
#15
Which of the following is a characteristic of neurodegenerative diseases?
Loss of function and structure of neurons
ExplanationNeurodegenerative diseases involve progressive loss of neuronal function and structure.
#16
In the context of cellular communication, what is the role of neurotransmitters?
Facilitate communication between nerve cells
ExplanationNeurotransmitters transmit signals between nerve cells, facilitating communication.
#17
In the context of coagulation, what is the function of fibrin?
Promote blood clotting
ExplanationFibrin plays a key role in forming blood clots during coagulation.
#18
Which of the following is a characteristic feature of multiple sclerosis?
Degeneration of the myelin sheath in the central nervous system
ExplanationMultiple sclerosis involves the progressive destruction of the myelin sheath in the CNS.