Noun. 1. septum - (anatomy) a dividing partition between two tissues or cavities. partition - (anatomy) a structure that separates areas in an organism. nasal septum-a partition of bone and cartilage between the nasal cavities. anatomy, general anatomy-the branch of morphology that deals with the structure of animals.
How long is the spinal cord and how much does it weigh? The average spinal cord is 45 cm long in men and 43 cm long in women. The spinal cord weighs approx. 35 grams. How much does the brain weigh? The human brain weighs on average three pounds, or 1.5 kg. What size is an adult humans brain? The human brain is about the size of a cantaloupe. Average brain width = 140 mm; Average brain length = 167 mm; Average brain height = 93 mm; How much oxygen does the brain need to stay conscious?
    Answer   The average human brain weighs three pounds (1.36 kilograms). The average female brain capacity is 79.3 cubic inches, slightly smaller than the male â¦ brain of 88.5 cubic inches. The largest human brains may be twice those of average size, but size has no relevance to brain performance.he average size of a donkey's brain is comparable to a human. The  donkey's brain is between 50 and 75 percent of the size of the  human brain.