Topics in BiologyHindbrain: Medulla Oblongata and its features Food web explained with examples Biology Scheme of Work, SS1, First Term Biology Scheme of Work, SS1, 2nd Term Biology Scheme of Work, SS1, 3rd Term Seminal Vesicles and Bulbourethral Glands as Male Accessory Sex Organs Male Reproductive System: Scrotum and its contents Brain: Introduction to the Human Brain Forebrain: Lobes of the Cerebrum and their Functions Cerebellum: Parts and Functions of the Cerebellum Midbrain: Division and Functions of the Midbrain Negative Feedback Mechanism in Homeostasis Arterial Disorders: Characteristics and Causes of Arterial Disorders Types of Desert and their Characteristics Characteristics of Tropical Rainforest Swamp Forest: What are Swamp Forests? Characteristics of Swamp Forests Savanna: Savanna and Grassland explained Savanna - Types of Savanna Tropical Savanna and Temperate Savanna with their Characteristics
Academic Questions in Biology
_____ cells are responsible for the formation of osteoblasts.
_____ is a bone that constitute the axial skeleton.
Which of the following is false concerning cartilages and bones?
A diagram showing the movement of energy through a food chain is called a _____.
Which of the following is NOT a part of the wrist bones (or carpal bones)?
The statements below are true concerning arteries except _____.
A. The arterial wall has 4 layers
B. Tunica Adventitia is the outermost layer of an artery
C. Aorta is the largest artery in the human body
D. Pulmunary artery conveys deoxygenated blood
E. Internal bleeding will occur when a deeply located artery is broken
F. Arterial vascular disorders are worsened in people with diabetes and renal failure
The following statements are true concerning blood vessels except _____.
A. They are comprised of arteries, veins and capillaries
B. Problems associated with blood vessels are called vascular disorders
C. All veins carry blood towards the heart
D. Capillaries are found at cellular level
E. Arteries usually divide to form arterioles
F. Arterioles give rise to capillaries
The above diagram shows a _____.
A. Food Chain
B. Food Web
C. Food Flow
D. Food Energy
E. Food Pyramid
F. Food Hierarchy
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Arterial disorders refers to any clinical condition associated with the anatomy (structure) or physiology (function) of an artery. These clinical conditions will comprise of the following features or characteristics:
Compression: When the vessels become flat.
Occlusion: When the vessels are blocked.
Tumors and Malformations: When there are unusual growths in the vessels. A vessel may also be deformed.
Spasms: Narrowing of the blood vessels.
Traumatic: It usually occurs after an injury.
Note: The above features are associated with vascular and arterial disorders:
Below are some conditions that are attributed to vascular disorders:
Arteriosclerosis typically occurs when there is an accumulation of cholesterol which eventually forms plaques in the wall of arteries. This is shown in the diagram below:
Cardiac arrest will result from atherosclerosis in the arteries of the heart while stoke will result from those around the brain.
This is the narrowing of the arteries. It may result from atherosclerosis and can also lead to heart attack and stroke, especially when the arteries around the heart and brain are involved.
Cerebrovascular thrombosis is a major cause of stroke in humans. It occurs when a blood clot appears inside an artery that supplies blood to the brain.
Vasculitis occurs when there is an inflammation of one or more arteries. They usually result from hyper-activity of the immune system; and will often present some pigmentations around the affected skin. This is shown in the image below:
This is synonymous to heart attack. It results when there is a sudden blood clot in one of the arteries that supplies blood to the heart.
Aneurysms refers to a weakness in the arterial wall. This weakness may be seen as a soft, painless swelling within the wall of the artery. This may also results into the formation of blood clots within such artery.
In raynaud’s disease, the arteries around the finger regions becomes narrower. As a result, the fingers may become whitish in color.
Wounds around the fingers will heal slowly as a result of poor blood flow from the narrowing of the arteries.
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Alfred Ajibola is a Medical Biochemist, a passionate Academician with over 7 years of experience, a Versatile Writer, a Web Developer, a Cisco Certified Network Associate and a Cisco CyberOps Associate.
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Amazing facts in Biology
Armadillos are western mammals known for their unique armor-like shell which are bulletproof
Although 🦓 zebras 🦓 are known for their characteristics black and white stripes, we still have some polka-dotted zebras
Charles Darwin is a British naturalist and biologist who contributed greatly into the study of evolution. According to research, he frequently ate the animals he studied
Lungs are the only human organ that can float on water
Unlike most 🐍 snakes 🐍 that lay eggs, anacondas give birth to live babies
A 🦐 shrimp's 🦐 heart is in its head
Women have more pain receptors than men
It's crucial you finish your antibiotics.
If you stop taking your antibiotics before you're supposed to, any bacteria that didn't get killed can develop an immunity to that antibiotic and become a super-strain, making it much difficult to kill in the future. So keep taking your antibiotics pill, even if you feel better.
Although rare, women can still give birth when they die. This is known as coffin birth
Men can actually get aroused post moterm. This is called priapism
NOTABLE POINTS IN Biology
For a thing to be considered Living, it must possess all the Basic Characteristics of Life. These include:
Irritability or Sensitivity
During strenuous exercises like sprinting or 🏃 running, your body may actually work in the shortage of oxygen. During this time, your body owes oxygen (called oxygen debt) and it must be replenished or repayed after the exercise is stopped. This is why you breathe excess of oxygen after you stopped the exercise.
This is the concept of anaerobic respiration
A food Chain is a diagram that shows the relationship between plants and animals within a habitat on the basis of how they rely on each other for food.
Note: Habitat is a place where an organism live. It is of three types:
The term Biology originated from two Greek words. They are:
Biology can therefore be defined is the study of life
Anything that has life is generally considered as a living organism (or organism) 🌱🐐🐓. All living organisms must be able to carry the following activities:
The above listed points are often regarded as the basic characteristics of life. You can memorize them using the acronym (MR. NIGER DAC).
The gas used in the manufacture of food by plants is Carbon dioxide or Carbon(IV)oxide or CO2
Plants manufacture food through a process called photosynthesis.
Note: Plants are the only orgnisms that take away CO2 from the atmosphere