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
Cold blooded animals are referred to as _____.
F. None of the above
All reptiles are vertebrates.
_____ 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
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The forebrain, also called the prosencephalon is the largest part of the brain. It consists of the cerebrum, thalamus and hypothalamus.
The cerebrum is the largest part of the forebrain (and the entire brain itself). It occupies the largest portion of the cranium and is divided into two halves which are termed cerebral hemispheres. (They are the right and left cerebral hemispheres). Both hemispheres are joined by a bundle of fibres called Corpus Callosum.
The image below shows both cerebral hemispheres and the corpus callosum:
Note: A function of the corpus callosum is to transmit nervous information between both cerebral hemispheres.
Each cerebral hemisphere controls the opposite side of the body; and are composed of four distinct lobes. The image below shows the 4 lobes of the cerebrum alongside a summary of their functions:
The cerebral lobes are:
Note: Present in the temporal lobe of the brain are the hippocampus, amygdala, epithalamus, thalamus, hypothalamus, cingulate gyrus, mammillary body and parahippocampal gyri. Together, these are referred to as the Limbic System and they are crucial for the processing functions of the memory.
The image below shows the Limbic System of the Temporal Lobe:
The thalamus is a small structure found between the cerebral cortex and the midbrain. It is a heterogeneous assembly of organized nuclei composed mainly of gray matter.
The hypothalamus is a portion of the forebrain made up small group of nuclei with various functions.
The hypothalamus is located just below the thalamus and above the pituitary gland. This is shown in the diagram below:
The main function of the hypothalamus is to create a link between the nervous system and endocrine system via the pituitary gland. For this reason, it is crucial in homeostatic roles via the release of hormones and temperature regulation.
Initiation and coordination of voluntary bodily activities. For instance, the fine control of hand and feet movements during sewing.
It performs higher functions like vision and hearing.
It controls speech and learning.
It acts as a center of emotion.
It controls reasoning and remembering.
It plays a part in mood control.
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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
🐸 Frogs 🐸 drink water through their skin
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
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