Admin Table of Contents
What is the head of a spider called?
Cephalothorax
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 is inside spiders?
Like other arthropods, the spider’s body is covered with a more or less rigid ‘skin’ or cuticle (the exoskeleton) made of protein and chitin. The cuticle even extends internally, lining the fore gut (mouth to stomach) and hind gut, the tracheal (breathing) tubes and the female’s sperm storage organs (spermathecae).
What is in a spider’s stomach?
The spider’s abdomen contains many important internal organs, such as the digestive tract, reproductive organs, and lungs. Tipping the abdomen are the spinnerets. A spider produces silk through tiny pores in its spinnerets. Most spiders have 6 spinnerets.
Do spiders have a heart?
The heart is located in the abdomen a short distance within the middle line of the dorsal body-wall, and above the intestine. Unlike in insects, the heart is not divided into chambers, but consists of a simple tube. The aorta, which supplies haemolymph to the cephalothorax, extends from the anterior end of the heart.
What is the body of a spider called?
The body of spiders is divided in two major parts. The first (anterior) part of the body is called the cephalothorax. Spiders are different from insects. The body of insects is divided in three major parts: head, thorax and abdomen. If we compare a spider with an insect, the cephalothorax is a combination of head and thorax.
What do spiders use the hairs on their legs for?
The hairs on their legs are used to pick up scents, sounds, vibrations and to detect air currents. Most spiders can move very fast, and some can also jump. At the front of the cephalothorax we find a pair of chelicera. These fan-like or claw-like appendages are mouthparts.
What is the cephalothorax of a spider?
The cephalothorax of spiders bears in front a pair of. chelicera and a pair of palps. It also bears 4 pairs of legs (total 8 legs), and on top a number of small eyes.
What is spiderspider hemolymph made of?
Spider haemolymph contains a number of different sorts of cells called hemocytes and a copper-based respiratory pigment called hemocyanin. The most common type of hemocyte is called a granular hemocyte. Hemocyanin is a large protein molecule similar to haemoglobin.