Human Physiology Lecture Notes

Artery vs Vein: Similarities and Differences (A Comparison Table)


difference between artery and vein

Arteries vs Veins
Similarities and Differences between Arteries and Veins

The circulatory system in an organism ensures the transport of oxygen, nutrients, carbon dioxide and hormone throughout the body. The blood circulatory system in an animal is facilitated by the heart (the blood pumping organ) and blood vessels (closed pipelines which carry out the circulation of blood throughout the body). There are three types of blood vessels in our body. They are:

(1).    Arteries
(2).    Veins
(3).    Capillaries

(1). Artery: They are blood vessels which originated from the heart and carry blood away from the heart. Arteries usually carry oxygenated blood except for pulmonary and umbilical arteries that carries deoxygenated blood.

(2). Vein: They are blood vessels which carry blood to the heart from various organs of the body. Veins usually carry deoxygenated blood except for pulmonary and umbilical vein that carries oxygenated blood.

(3). Capillaries: They are minutes blood vessels of one cell layer thickness and they facilitate the exchange of oxygen, carbon dioxide, nutrients and hormones in the blood to individuals cells of different organs. Arteries and veins are interconnected through capillaries and thus the blood circulation forms a closed system in majority of animals.

The current post describes the similarities and differences between Arteries and Veins with a comparison table.

Similarities between Arteries and Veins

Ø  Both are blood vessels.

Ø  Both transport blood.

Ø  Blood transport is unidirectional in both arteries and vein.

Ø  Arteries and veins composed of layers of cells.

Ø  Both arteries and veins composed of three layers of cells namely Tunica externa (external layer), tunica media (middle layer) and tunica interna (internal layer).

Ø  Both arteries and veins are covered by muscular tissues which assist in the contraction or expansion of blood vessels.

Ø  Both undergo vasoconstriction and vasodilation to adjust the blood pressure according to the action of hormones and neurotransmitters.

Ø  Both arteries and veins show anastomosis.

Difference between Arteries and Veins

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Lecture notes in Microbiology

MCQ on History of Microbiology (MCQ 05) with Answer Key


mcq on history of microbiology

MICROBIOLOGY MCQ-05
(Biology / Life Sciences MCQ: Multiple Choice Questions in Microbiology)

MCQ on Scientists & Discoveries in Microbiology Part 2
(Sample/Model/Practice Questions for NEET, AIPMT, M.Sc. and Medical Entrance Examination)


1. Who discovered Mycobacterium tuberculosis?

a.       Koch
b.      Jenner
c.       Pasteur
d.      Virchow

2. Mycobacterium lepree was discovered by:

a.       Pasteur
b.      Jenner
c.       Koch
d.      Hansen

3. Antibodies were discovered by:

a.       Edelman
b.      Porter
c.       Edelman and Porter
d.      Edelman and Hess

4. Streptococcus pneumonia was discovered by:

a.       Pasteur
b.      Jenner
c.       Koch
d.      Hansen

5. Who discovered Bacillus anthacis?

a.       Koch
b.      Pasteur
c.       Jenner
d.      Hansen

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Lecture notes in Microbiology

MCQ on Scientists and Discoveries in Microbiology with Answer Key (MCQ 04)


Scientists in Microbiology MCQ

MICROBIOLOGY MCQ-04
(Biology / Life Sciences MCQ: Multiple Choice Questions in Microbiology)

MCQ on Scientists & Discoveries in Microbiology Part 1
(Sample/Model/Practice Questions for NEET, AIPMT, M.Sc. and Medical Entrance Examination)


1. Scientist who demonstrated that open tubes of broth remained free of microbes when air was free of dust:

a.       Tyndal
b.      Pasteur
c.       Petri
d.      Francesco Redi

2. Who discovered bacterial transformation?

a.       Jenner
b.      Griffith
c.       Messelson
d.      Tautum

3. Who is known as the father of microbiology?

a.       Rasteur
b.      Koch
c.       Leewenhoek
d.      Robert Hook

4. Who is known as the father of medical microbiology?

a.       Koch
b.      Pasteur
c.       Jenner
d.      Tautum

5. Antiseptic properties were first described by:

a.       Jenner
b.      Pasteur
c.       Lister
d.      Beijernic

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Lecture notes in Microbiology

MCQ on Basics of Microbiology with Answer Key and Explanations (Microbiology MCQ03)


microbiology quizzes on basics

MICROBIOLOGY MCQ-03
(Biology / Life Sciences MCQ: Multiple Choice Questions in Microbiology)

MCQ on Basics of Microbiology Part – 1
(Sample/Model/Practice Questions for NEET, AIPMT, M.Sc. and Medical Entrance Examination)

(1). Virulence of a microorganism can be best described as:

a.       The ability to penetrate into the host tissue
b.      The ability to colonize in the host
c.       The ability to produce a pathological symptom
d.      The ability to utilize the machinery of the host
e.       All of the above

(2). “The feeling of general discomfort” is called as:

a.       Arthritis
b.      Symptom
c.       Malaise
d.      Pain

(3). The utilization of elemental carbon by microbes during bio-geochemical cycle is called:

a.       Dissimilation
b.      Immobilization
c.       Mineralization
d.      Neutralization

(4). The first antibody to contact invading microorganism is:

a.       IgG
b.      IgA
c.       IgM
d.      IgD

(5). Which of the following vector(s) was extensively used in human genome project?

a.       Plasmid vector
b.      Yeast Artificial chromosome
c.       Cosmid vector
d.      (b) and (c)

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Lecture notes in Microbiology

Microbiology MCQ 02 Practice Questions Part 2 with Answer Key and Explanations


microbiology quizzes with answer key

MICROBIOLOGY MCQ-02
(Biology / Life Sciences MCQ: Multiple Choice Questions in Microbiology)

Quizzes on Microbiology: Practice Test Part 2
(Sample/Model/Practice Questions for CSIR JRF/NET Life Science Examination, ICMR JRF Exam, DBT BET JRF Exam, GATE BT and XL Exam, ICAR JRF NE Exam, PG Entrance Exam, JAM Exam, GS Biology Exam and Medical Entrance Exam)

1. Glucans, Mannans and Chitin are found to be present in the cell wall of ______

a.       Plants
b.      Eubacteria
c.       Fungi
d.      Actinomycetes

2.  _____ is a synthetic Antimicrobial drug against Mycobacterium tuberculosis.

a.       Penicillin
b.      Tetracycline
c.       Erythromycin
d.      Isoniazid

3. Who isolated Streptococcus pneumonia for the first time?

a.       Robert Koch
b.      Edward Jenner
c.       Antony von Leewenhock
d.      Louis Pasteur

4. Botulinum toxin is a ________.

a.       Protein
b.      Lipid
c.       Sugar
d.      Nucleic acid

5. Tear drops are rich in ___________.

a.       Amylase
b.      Phosphatase
c.       Lysozyme
d.      Protease

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