Worms by Mateo Guzman Lopez

Introduction Slide

emw0998 — 2024-03-14 17:46:01 UTC

Hello, today we are going to be presenting our living organisms. Our names are-Ethan W, Jese L, Mateo G, and Matteo B.

Worms

imb0215 — 2024-03-15 17:01:58 UTC

*worm produce sexually by mating with other worms

*they go through mitosis

*came from Asia and Europe

*One group, the Cycloneuralia, remained limbless: they gave rise to some modern worms like nematodes. The other, the Lobopodians, evolved legs.

Skeletal System of a worm

mg1100 — 2024-03-15 17:15:58 UTC

They don't have a skeletal system but they have a hydrostatic skeleton that is divided into segments which is a flexible skeleton filled with fluid. Each segment of the worm’s body contains muscles that work independently of every other segment

https://asknature.org/strategy/a-flexible-body-allows-the-earthworm-to-burrow-through-soil/

A Worms Muscular System

emw0998 — 2024-03-15 17:17:34 UTC

longitudinal muscles that run the length of the body and circular muscles that form circular bands around the body. Worms also have something called a hydrostatic skeleton. A hydrostatic skeleton or hydroskeleton is a type of skeleton supported by hydrostatic fluid pressure,

circulatory system of a worm

imb0215 — 2024-03-15 17:20:06 UTC

*The earthworm has a closed circulatory system. An earthworm circulates blood exclusively through vessels. There are three main vessels that supply the blood to organs within the earthworm.

https://www.youtube.com/watch?v=kSjYRLU1S6E&ab_channel=WalterJahn

https://www.youtube.com/watch?v=RVZ6cOLI2pQ&ab_channel=Vidya-mitra

Intergumentary System of a Worm

jl0960 — 2024-03-15 17:22:12 UTC

The first nonspecific barrier of earthworms is the skin covering their entire body. The skin consists of the epidermis and a thin cuticle, which contains mucopolysaccharides acting as an antimicrobial barrier.

A Worms Reproductive System

emw0998 — 2024-03-15 17:23:33 UTC

The earthworms each have two male openings and two sperm receptacles, which take in the sperm from another mate. The earthworms have a pair of ovaries that produce eggs. Earthworms are hermaphrodites where each earthworm contains both male and female sex organs.

jl0960 — 2024-03-15 17:24:59 UTC

Respiratory System of a Worm

jl0960 — 2024-03-15 17:31:07 UTC

The earthworms skin serves as its respiratory organ, which is what explains their wet skin.

worms digestive system

imb0215 — 2024-03-15 17:33:22 UTC

jl0960 — 2024-03-15 17:38:42 UTC

earth worms circularity and digestive system

imb0215 — 2024-03-15 17:45:46 UTC

Intergumentary System of an Worm

emw0998 — 2024-03-15 17:47:11 UTC

Respiratory system of a Worm

emw0998 — 2024-03-15 17:49:21 UTC

Nervous System of a Worm

mg1100 — 2024-03-18 16:55:37 UTC

They have a nervous system running along their body.The central nerve cords are connected to other nerves like the rungs of a ladder throughout the body. Two ganglial nervous tissues at the head function similar to a simple brain. The nervous system of an earthworm comprises of a ventral nerve cord and peripheral nerves

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5797252/#:~:text=Nerve%20cords%20run%20along%20the,similar%20to%20a%20simple%20brain.

https://microbenotes.com/nervous-system-of-earthworm/

imb0215 — 2024-03-18 17:06:11 UTC

worm food

mg1100 — 2024-03-18 17:14:45 UTC

mg1100 — 2024-03-18 17:20:16 UTC

matteo bravo- a worms digestive system

imb0215 — 2024-03-18 17:27:33 UTC

matteo bravo- circulatory system of a worm

imb0215 — 2024-03-18 17:32:09 UTC

matteo bravo-digestive system of a human

imb0215 — 2024-03-18 17:42:43 UTC

jl0960 — 2024-03-18 17:43:46 UTC

jl0960 — 2024-03-18 17:44:49 UTC

matteo bravo-circulatory system of a human

imb0215 — 2024-03-18 17:46:31 UTC

Part 1: Worm Introduction

imb0215 — 2024-03-19 17:40:44 UTC

Part 2: a worms digestive and circulary system

imb0215 — 2024-03-19 17:46:37 UTC

4 of the body system

mg1100 — 2024-03-20 17:41:24 UTC

skeletal system

mg1100 — 2024-03-20 18:01:18 UTC

Skeletal body system

mg1100 — 2024-03-21 17:20:12 UTC

emw0998 — 2024-03-21 17:20:22 UTC

Earth Worm Compared to a Human, Intergumentary System

jl0960 — 2024-03-21 17:26:13 UTC

One major difference is that worms use their skin to breathe, humans use their lungs.

emw0998 — 2024-03-21 17:27:18 UTC

mg1100 — 2024-03-21 17:27:46 UTC

Earth Worm Compared to a human, Respiratory System

jl0960 — 2024-03-21 17:29:49 UTC

Worms breathe air in and carbon dioxide out, like us, but they don't have lungs.