I'm assuming this is referring to the US (other countries have Senates too!). In the US Senate, the Vice President is normally considered the President of the Senate, and he is part of the Executive branch. However, when the VP isn't around, the oldest member of the Senate from the majority party, currently Senator Daniel Inouye of Hawaii, is considered the "president pro tempore" ("president for the time") of the Senate. He would be part of the Legislative branch.
United States Senate
The Legislative Branch is responsible for drafting the laws for the United States. The Legislative Branch consists of the United States Senate and the House of Representatives.
In the United States, the legislative branch of government is made up of the Senate and the House of Representatives. The two houses form the United States Congress.
The United States House of Representatives and the United States Senate make up the legislative branch of government. The other branches are the executive branch and the judicial branch.
The citizens of the united states elect the legislative branch (the house of Representatives and the Senate).
In the United States the legislative branch of the US Senate, is composed of senators. Each State has two senators in the Senate.
The United States House of Representatives and the United States Senate make up the legislative branch of government. The other branches are the executive branch and the judicial branch.
The legislative branch makes the laws. In the United States this branch is known as Congress, and it includes the Senate and the House of Representatives.
No there is no such thing as an administrative branch.
The United States Congress is composed of both the Senate and the House of Representatives. Congress is the legislative branch of government.
Article One of the United States Constitution describes the powers of the legislative branch of the United States government, known as Congress, which includes the House of Representatives and the Senate.
In United States of America, legislative branch is make up the Senate and the House of Representatives, which is also known as congress.