SWIMMERETS in the crayfish are the paired ventral abdominal appendages which beat in a metachronal rhythm during behaviours such as swimming and burrow ventilation. Each swimmeret is driven by alternating bursts of impulses in antagonistic power- and return-stroke motoneurones. Why do crayfish have Swimmerets? Tell the students that the swimmeretsRead More →
Exercises to stretch hip and thigh muscles and to strengthen hip muscles have been shown to correct bow-legged deformity.…Exercises that may help improve genu varum include: Hamstring stretches. Groin stretches. Piriformis stretches. Gluteus medius strengthening with a resistance band. Why my legs are not straight? What are bowlegs? Bowlegs isRead More →
Yes and no. As noted, harvestmen are omnivores and are classified as both predators and scavengers. They use fang-like mouthparts known as “chelicerae” to grasp and chew their food. However, harvestmen aren’t known to bite humans and are not considered a danger to households. How do harvestmen hunt? In aRead More →
All arachnids have eight legs, and unlike insects, they don’t have antennae. The bodies of arachnids are divided into two sections, the cephalothorax in front and the abdomen behind. Sometimes times small arachnids like mites and harvestmen have the two sections fused close together so you can’t see the separation.Read More →
Exercise, stretching, strengthening, physical therapy, and vitamins will make your muscles and bones stronger but will not change the shape of the bones. The only way to truly change the shape of the legs is to break the bone and straighten it. This is an enduring, structural alteration. Does BowleggednessRead More →
At the end of the novel, the pigs start walking on two legs—so, Squealer teaches the sheep a new chant: “Four legs good, two legs better” (10.13). Who creates Animalism? The novella also makes a broader argument about political power and oppression in general. What is Animalism? Napoleon, Snowball andRead More →
When a Huntsman, Redback or Funnel-web is walking along, the Daddy-long-legs can simply reach down and haul the more dangerous (but shorter-legged) spider into its web. It swiftly wraps up its prey before the captor can get close enough to harm the Daddy-long-legs. Do Daddy Long Legs eat wolf spiders?Read More →
Scientists believe that dolphins evolved from a hoofed, land-living mammal called ‘Mesonyx’, and returned to live in the seas some fifty million years ago. They may have looked like a large dog originally, but have looked dolphin-shaped for millions of years. Did whales have legs before? Over time, as theyRead More →