What are the body parts of a spider and their functions?
Cephalothorax – the fused head and thorax, also called the prosoma. It contains the brain, jaws, eyes, stomach, and leg attachments. Abdomen – the belly, also called the opisthosoma. It contains the guts, heart, reproductive organs, and silk glands.
What internal organs do spiders have?
The cephalothorax contains the brain, stomach, eyes and mouth, and the abdomen contains the heart, digestive tract, reproductive organs and lungs.
How does a spider protect its organs?
The cuticle provides internal attachment points for the muscles and helps in the regulation of blood pressure. While it is hard and protective externally, the cuticle must still accommodate the spider’s sense organs – in the form of various types of innervated (supplied with nerves) hairs and pits, as well as the eyes.
What are the three main body parts of a spider?
The most visible parts of the body of a spider are: the cephalothorax, the abdomen, and the legs.
How do spiders work?
They feed primarily on insects. They can inject venom into their prey. They can produce silk. They have a pair of small appendages on the head, called pedipalps.
How do spiders eat and digest their prey?
Spiders digest their food outside their bodies. After their prey is captured, spiders expel digestive enzymes from their intestinal tract onto the victim. The enzymes break down its body tissues and, after a few seconds, the spider sucks up the predigested, liquid tissues.
Where are spiders reproductive organs?
The sex organs (gonads) of male and female spiders are in the abdomen. The eggs are fertilized, as they pass through the oviduct to the outside, with sperm stored in the seminal receptacles after mating.
How does a spiders digestive system work?
Digestion. Spiders digest their food outside their bodies. After their prey is captured, spiders expel digestive enzymes from their intestinal tract onto the victim. The enzymes break down its body tissues and, after a few seconds, the spider sucks up the predigested, liquid tissues.
How do spiders digest their prey?
What do spiders do to their prey?
When the spider catches its prey, it swings the fangs out into the animal’s body. When the spider pierces its prey with the fang, it squeezes out the venom, injecting the animal with enough neurotoxin to paralyze or kill. This makes it safe for the spider to feed on its prey, without the risk of a struggle.
What are the main body regions of insects and spiders?
All adult insects have three body parts: head, thorax and abdomen. The wings and legs are always attached to the thorax. (Spiders, which are not insects, have two body parts: head and abdomen.)
Why are spiders important?
Spiders are beneficial predators and serve a significant role in keeping populations of many insect pests in check. Spiders are oftentimes the most important biological control of pests in and around homes, yards, gardens and crops. Spiders use various tactics to capture prey.
Do spiders have lyriform organs?
Learn more. Vibration receptors appear to be more necessary for web-building spiders, but most knowledge of arachnid lyriform organs comes from the study of wandering spiders affected by ground vibrations.
Where is the lyriform cuticle located?
The lyriform organ is found in all appendages, including the femur, patella, tibia, and metatarsal segments. A number of slit receptors of various sizes are distributed in the parallel orientation of the cuticle along the long axis.
Where is the lyriform organ in Nephila clavata?
Here, we examined the fine structural aspects of the lyriform organs in the web-building spider Nephila clavata using field emission scanning electron microscopy (FESEM) to fill the gap. The lyriform organ is found in all appendages, including the femur, patella, tibia, and metatarsal segments.