Those are the two "Antennae".
According to Aquaticcommunity.com, there are two (2) main segments that make up the body of a freshwater or marine shrimp. The first part is the upper portion of the shrimp, referred to as the cephalothorax. The cephalothorax includes the head and the thorax or pereon region of the shrimp. It is covered by a protective plating system called the carapace.
The cephalothorax consists of the rostrum (nose), stalked eyes, carapace, the 1st and 2nd antennas, antenulles, pereopods (walking legs – 5 sets), the maxillipeds, and the mandibles (jaws). The antenna and antenulles are used as feelers or sensory feelers. The maxillipeds are used to rip food apart before it is moved into the mandible where it is crushed and devoured.
The lower portion of the body, often called the abdomen or pleon segment include both abdominal section upper and lower. The upper abdominal section is referred to as the tergum. The bottom half is referred to as the pleuron. The pleopods, often called swimmerets, are tucked under the abdomen of the shrimp. It also includes the tail section of the shrimp that is broken into three parts. Two of which are called uropods, and the central pointier segment is the telson. The pleopods are used foe swimming while their tails are used like aircraft wings to control their direction.
Tip! Learn How To Cook Shrimp And Mistakes To Avoid featured at the Huffington Post.