Question

The weight of a normal brain of a man is
A. \[3.3lbs\]
B. \[3.5lbs\]
C. \[4.0lbs\]
D. \[4.5lbs\]

Answer 1

Hint: One of the largest and highly complex organ in the body is the brain. It contains over 100 billion nerves that interact in trillions of links called synapses. The brain has three main parts- forebrain, midbrain, and hindbrain.

Complete answer: The most critical component of the CNS is the brain, which governs all voluntary functions along with essential processes such as circulation and breathing in the body. The brain stores memories as well. The feelings of the person are often experienced by the brain. The normal temperature of the body is also preserved. So, we can say that the weight of a normal brain in a man is \[3.3lbs\]. On an average, the typical human brain weighs about 1.5 kg (3.3 lbs) with a volume of about \[1130\] cubic centimeters (about\[3cm\]) for females and \[1260cm\] (about \[3cm\]) for females.
Hence, the correct answer is option A- \[3.3lbs\]lbs.

Additional Information:
The brain characteristics are as follows:
1. In the cranium of the skull is the brain.
2. The human adult brain weighs between 1,300-1,500 g roughly. Therefore, around 2 percent of the overall body weight is in the adult human brain.
3. The brain and spinal cord are surrounded by meninges called connective tissue membranes.
4. In humans, there are three meninges; they are dura mater, arachnoid mater, and pia mater.
5. The main parts of the brain are the anatomical cerebrum and cerebellum.
6. The cerebrum contributes about 80 percent of the brain weight.
7. 125-150 ml is the average amount of cerebrospinal fluid (CSF). In adults, the brain volume is 1400 cc.
8. CSF (cerebrospinal fluid) is a transparent extracellular fluid found in the subarachnoid space of the brain ventricles in the central spinal fluid canal.
Thus, the correct response is ‘\[2%\].'

Note: The cerebrum is a significant part of the brain composed of two hemispheres connected by a band known as the callosum corpus. There are groves flowing on this in the cerebral hemispheres called sulci. This shape raises folds that are known as gyri (singular - gyrus) on the surface. The outer part of the cerebrum is recognized as the cortex (grey matter) on the cut segment, whereas the inner part is regarded as the medulla (white matter). CSF serves as a cushion and avoids mechanical injuries to the brain. As a spinal cord, Medulla continues further.