comment_modules_enabled in core/modules/comment/comment.install

Implements hook_modules_enabled().

node_entity_info in core/modules/node/node.module

Implements hook_entity_info().

node_menu in core/modules/node/node.module

Implements hook_menu().

node_modules_enabled in core/modules/node/node.module

Implements hook_modules_enabled().

node_types_rebuild in core/includes/drupal.inc

Drupal-compatible wrapper for clearing caches.

node_type_delete in core/modules/node/node.module

Deletes a node type from the database.

node_type_save in core/modules/node/node.module

Saves a node type to the database.