The largest single part of the shark’s nervous system is the brain .
What does the medulla oblongata control in a shark?
Cerebellum – Just caudal from the optic lobes it controls muscular coordination and position. Auricle of Cerebellum (Restiform body) – A lateral extension of the cerebellum. Medulla Oblongata – The base of the brain, a widening of the spinal cord. Controls many of the spinal reflexes .
What is the function of the siphon in a shark?
During copulation, the siphon isthmus dilates (Fig. 7) and allows water from the anterior sac to propel sperm from either the pelvic sac or the urogenital papilla (via venturi force) through the clasper groove and into the female reproductive tract.
Do sharks feel pain?
Sharks have many fewer nerves than we do, and devote a smaller percentage of those they do have to feeling pain .
Which gender of shark has a clasper?
The best way to distinguish between mature male and female sharks is by looking for the presence of external sexual organs, called claspers. Those with claspers are mature males ; those without claspers are either females or immature males.
Which level of the brain is present first?
KEY POINTS. The brain’s lower-level structures are the oldest in the brain, and are more geared towards basic bodily processes than the higher-level structures. Except for the spinal cord, the brain’s lower-level structures are largely located within the hindbrain, diencephalon (or interbrain), and midbrain.
What organ helps control buoyancy in sharks?
Sharks mainly rely on their large oil-filled liver to stay buoyant in the oceans. This is one of many ways that sharks are able to remain buoyant in the water without a swim bladder.
What are the 4 major parts of the shark’s brain?
A partial list of functions: the cerebellum is in charge of body movement; the hindbrain processes most sensory information and moves the head; the tectum integrates sensory information; the olfactory lobes are for the sense of smell; the diencephalon regulates hormones and some behaviors; the forebrain coordinates ...
Do sharks fart?
They let air out in the form of a fart when they want to lose buoyancy. As for other shark species, well we really just don’t know ! ... Though the Smithsonian Animal Answer Guide confirms that captive sand tiger sharks have been known to expel gas bubbles out their cloaca, there really isn’t much else out there about this.
Can sharks feel love?
Their amazing emotional sensitivity, for the reason that this discovery is so contrary to their popular image. There is probably no one scarier than the massive shark in the movie Jaws. ... White sharks feel love and emotions as much as we do .
What is a good shark name?
- Nemo (Disney movie of the same name)
- Bubbles.
- Swim Shady (play on Eminem’s Slim Shady)
- Pirate.
- Baity.
- Jack Sparrow (pirate in Pirates of the Caribbean)
- Squirt (ironic for a larger shark species)
- Ariel (inspired by The Little Mermaid)
What is the largest species of shark?
The largest is the whale shark , which has been known to get as large as 18 meters (60 feet). The smallest fits in your hand.
Are female sharks more aggressive than males?
“It in no way can be attributed to sharks ‘preferring’ males over females. In recent times proportionately more females are being attacked because more females are engaging themselves in riskier, formerly male dominated water activities.” So you’re being attacked by a shark...
Which side of the brain controls memory?
Our brains have two sides, or hemispheres. In most people, language skills are in the left side of the brain. The right side controls attention, memory, reasoning, and problem solving. RHD may lead to problems with these important thinking skills.
What are the 3 types of the brain?
The brain can be divided into three basic units: the forebrain, the midbrain, and the hindbrain . The hindbrain includes the upper part of the spinal cord, the brain stem, and a wrinkled ball of tissue called the cerebellum (1).
