3.01: Animal Cells
- Page ID
- 4240
This schematic represents an idealized animal cell, e.g., a liver cell. The columns to the left and right of the labels contain links to discussions of the particular structures.
| Intermediate filaments Golgi apparatus |  A three-dimensional cutaway illustration of an idealized animal cell with numbered labels 1???13 identifying internal structures. (1) Nucleolus: a pink sphere inside the nucleus. (2) Nucleus: a large light-blue rounded organelle enclosing the nucleolus. (3) Ribosomes: small dark dots studding the rough endoplasmic reticulum. (4) Peroxisome: a small green bowl-shaped vesicle on the right side of the cell. (5) Rough endoplasmic reticulum: pink flattened membrane sheets studded with ribosome dots, continuous with the nuclear envelope. (6) Golgi apparatus: a stack of yellow curved membrane cisternae below the rough ER. (7) Intermediate filaments: a thin wavy line in the lower cytosol. (8) Smooth endoplasmic reticulum: pink branching tubules lacking ribosomes, extending leftward from the rough ER. (9) Mitochondrion: a blue oval organelle with yellow folded inner membranes (cristae) shown in cutaway. (10) Vacuole: a teal bowl-shaped structure at the top. (11) Cytosol: the tan background fluid filling the cell interior. (12) Lysosome: a dark red bowl-shaped vesicle near the top. (13) Centrioles: two yellow barrel-shaped structures arranged perpendicular to each other, upper left of the nucleus. The outer boundary of the cell is shown as a tan plasma membrane enclosing all contents. | Pinocytotic vesicle Actin filaments Glycogen granules Smooth endoplasmic reticulum Microtubules Ribosomes Mitochondrion Rough endoplasmic reticulum Cytosol |